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MICHELLE H TAN MD
NPI 1467411959
Internal Medicine in Gaithersburg, MD

Active since March 22, 2006
600 S FREDERICK AVE, STE 302, GAITHERSBURG, MD 20877(301) 208-1188(301) 208-1188 Get Directions Write a Review

NPPES record last updated: November 16, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Michelle H Tan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHELLE H TAN MD (NPI 1467411959) is an individual internal medicine provider in Gaithersburg, Maryland, licensed in Maryland (D0060871) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1467411959
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMICHELLE H TANCredential: MD
Location Address600 S FREDERICK AVE, STE 302Gaithersburg, MD 20877-1245
Mailing Address12224 Wonder View WayNorth Potomac, MD 20878-3750 · (240) 994-5657 · Fax (301) 208-1178
Phone(301) 208-1188
Fax(301) 208-1188
Sole ProprietorYes
Enumeration DateMarch 22, 2006
Last NPPES UpdateNovember 16, 2009
✔ NPI 1467411959 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MD · D0060871
Definition
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.
600 S FREDERICK AVE, Gaithersburg, MD 20877
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Other Identifiers 3

Medicare ID-Type UnspecifiedG02300
Medicare UPINH20080MD
Medicaid405459800MD

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 21D1056559

Michelle Tan MD Deer Park Internal Med · Gaithersburg, MD
Expired · Jul 18, 2026
CLIA Number21D1056559
Laboratory TypePhysician Office
Certificate Effective DateJuly 19, 2024
Certificate Expiration DateJuly 18, 2026
Laboratory DirectorMichelle Tan
Laboratory Phone(301) 208-1188
Laboratory LocationMichelle Tan MD Deer Park Internal Med600 S Frederick Ave Ste 302, Gaithersburg, MD 20877
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
354 services127 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
45 services45 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
33 services29 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
15 services15 patients

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DEER PARK INTERNAL MEDICINE
Clinic/Center (Medical Specialty)
600 S FREDERICK AVE, SUITE 302
GAITHERSBURG, MD 20877
Montgomery County (301) 208-1188

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michelle Tan's NPI number?

The NPI number for Michelle Tan is 1467411959. It was assigned to this individual provider in the NPPES registry on March 22, 2006.

Where is Michelle Tan located?

Michelle Tan practices at 600 S Frederick Ave Ste 302, Gaithersburg, MD 20877. The listed phone number is (301) 208-1188.

What is Michelle Tan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Michelle Tan was last updated on November 16, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.