35 Years of Experience
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Tan, Internist in Frederick, MD?
Dr. William Tan, MD is an Internist, who primarily practices in Frederick, MD with 2 additional practice locations. He has been practicing for over 35 years. Dr. Tan graduated from University of Maryland School of Medicine. Dr. Tan is fluent in English and French, and is currently seeing new patients. Dr. Tan’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Tan’s office at (410) 795-7737.
Where did Dr. Tan go to medical school and complete their residency?
Medical School: University of Maryland School of Medicine
What languages does Dr. Tan speak?
Dr. Tan and their clinical team can communicate with patients in the following languages:
English
French
What conditions does an Internist like Dr. Tan typically treat?
As an Internist, Dr. Tan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Tan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Type 2 Diabetes
- Type 2 Diabetes with Diabetic Neuropathy
- Diabetes Type 2
- Type 2 diabetes
- Diabetic Nerve Problems
- Diabetic Neuropathy
- Diabetes Mellitus Type 2
- Adult-Onset Diabetes
- Non-Insulin Dependent Diabetes
- Diabetic Nerve Damage
- Diabetic Polyneuropathy
- Peripheral Neuropathy from Diabetes
- Diabetes Mellitus Nerve Problems
ICD-10 Codes:
- E119: Type 2 diabetes mellitus without complications
- E1142: Type 2 diabetes mellitus with diabetic polyneuropathy
Also known as:
- Adult Health Checkup with Abnormal Findings
- Health Checkup
- Adult Physical Exam with Issues
- Routine Checkup with Concerns
- General Medical Exam with Abnormal Results
ICD-10 Codes:
- Z0001: Encounter for general adult medical examination with abnormal findings
Also known as:
- Immunization Visit
- Vaccines
- Vaccination appointment
- Shot visit
- Immunization encounter
ICD-10 Codes:
- Z23: Encounter for immunization
Also known as:
- Other Pre-Procedure Examination
- Various pre-op checks
- Miscellaneous pre-surgery exams
- Other pre-treatment assessments
ICD-10 Codes:
- Z01818: Encounter for other preprocedural examination
Also known as:
- Routine Adult Health Checkup
- Health Checkup
- Adult physical exam
- Annual wellness visit for adults
- General adult medical exam
ICD-10 Codes:
- Z0000: Encounter for general adult medical examination without abnormal findings
Also known as:
- Long-Term Blood Thinner Use
- Blood Thinners
- Chronic anticoagulant therapy
- Ongoing blood thinner treatment
- Anticoagulant medication use
ICD-10 Codes:
- Z7901: Long term (current) use of anticoagulants
What procedures does an Internist like Dr. Tan typically perform?
As an Internist, Dr. Tan performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Tan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.
Also known as:
- Individual Speech and Language Therapy
- Speech-Language Pathology
- Voice Therapy
- Communication Disorder Treatment
- Auditory Processing Therapy
CPT Codes:
- 92507: Treatment Of Speech, Language, Voice, Communication, And/Or Auditory Processing Disorder; Individual
Also known as:
- Swallowing Therapy
- Dysphagia Treatment
- Feeding Therapy
- Oral Function Therapy
CPT Codes:
- 92526: Treatment of swallowing dysfunction and/or oral function for feeding
Also known as:
- Swallowing Function Test
- Dysphagia Tests
- Dysphagia Evaluation
- Oral Swallowing Assessment
- Pharyngeal Swallowing Test
- Swallowing Study
CPT Codes:
- 92610: Evaluation of oral and pharyngeal swallowing function
Also known as:
- Comprehensive Speech and Language Evaluation
- Speech sound evaluation
- Language comprehension test
- Articulation assessment
- Speech therapy evaluation
CPT Codes:
- 92523: Evaluation of speech sound production (eg, articulation, phonological process, apraxia, dysarthria); with evaluation of language comprehension and expression (eg, receptive and expressive language)
Does Dr. Tan accept my insurance?
Dr. Tan accepts most major insurance plans. Important: Please call our office at (410) 795-7737 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Tan accept in Frederick, MD?
Dr. Tan in Frederick, MD accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
CareFirst BlueCross BlueShield
Cigna Group
Federal government of the United States
Government Employees Health Association
Johns Hopkins Health System
Medicare
Mutual of Omaha
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Tan's office located?
Dr. William Tan's Primary Practice
187 Thomas Johnson Dr Ste 6
Frederick, MD 21702
(410) 795-7737
What is Dr. Tan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Tan's National Provider Identifier (NPI) number is 1386754455.
What common questions do patients ask about Dr. Tan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Tan
What is Dr. William Tan's specialty?
Dr. Tan is a Internist near Frederick, MD.
What does an Internist do?
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Is this Dr. William Tan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Tan is affiliated with Frederick Health Hospital, Wellspan York Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see an Internist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see an Internist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is William Tan accepting new patients in Frederick, MD?
Yes, Dr. William Tan is accepting new patients at this time.
Does Dr. William Tan offer online booking?
Please contact Dr. Tan's office at (410) 795-7737 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with William Tan?
Please contact Dr. Tan's office at (410) 795-7737 for information regarding telehealth appointment availability or for scheduling assistance.
<section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>