Dr. Michelle H. Tan, MD
- Medicare services, 2024
- 447
- Medicare patients, 2024
- 160
- Part D claims, 2024
- 2,605
- Industry payments
- $565
- State license
- 1
- Practice address
- 600 S Frederick Ave, Gaithersburg, MD 20877
- Practice phone
- Call (301) 208-1188
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Deer Park Internal Medicine
Gaithersburg, Maryland
Find Dr. Tan's professional email, personal email and mobile number
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Dr. Michelle H. Tan is an internist in Gaithersburg, Maryland
Dr. Tan practices at Deer Park Internal Medicine in Gaithersburg, Maryland.
Dr. Tan's NPI, 1467411959, was assigned on March 22, 2006. Dr. Tan holds Maryland license D0060871.
- NPI
- 1467411959NPI Registry (opens in a new tab)
- NPI enumeration date
- March 22, 2006
- NPI status
- Active
- Practice phone
- (301) 208-1188
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Michelle H. Tan practices at Deer Park Internal Medicine in Gaithersburg, Maryland
Dr. Tan's primary practice is Deer Park Internal Medicine, at 600 S Frederick Ave, Gaithersburg, MD 20877 in Montgomery County. The practice phone is (301) 208-1188.
- Deer Park Internal Medicine600 S Frederick Ave, Gaithersburg, MD 20877 · Montgomery CountyPhone(301) 208-1188
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michelle H. Tan is affiliated with 1 site of care
Dr. Tan's primary practice is Deer Park Internal Medicine in Gaithersburg, Maryland.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Michelle H. Tan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Deer Park Internal Medicine | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michelle H. Tan is one of 3,320 internists in Maryland
Internal medicine is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tan is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Tan
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michelle H. Tan billed Medicare for 447 services in 2024
CMS data shows 447 Medicare services from Dr. Tan across 4 procedure codes in 2024, for 160 Medicare patients. Medicare paid $39,754 for them. Every service was in an office.
Dr. Tan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5022024: 36926%
- Other services
- 2023: 302024: 4550%
- Tests and treatments
- 2023: 332024: 33No change
Dr. Tan compared with the Maryland median for internists, 2024
- Dr. Tan
- Maryland median
- Medicare services
- 447vs 65632% below
- Medicare patients
- 160vs 25136% below
- Part D claims
- 2,196vs 3097.1 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Tan's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tan and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michelle H. Tan treated 160 Medicare patients in 2024, average age 76
CMS counts 160 Medicare patients who saw Dr. Tan in 2024. The largest group is 75 to 84, with 65 patients. 74% of them have high cholesterol, and 71% have high blood pressure. 38% are also on Medicaid. Their average risk score is 0.97, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tan's median patient age at 64, with 59% women.
Dr. Tan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Tan's Medicare patients by sex, 2024
- Women10465%
- Men5635%
Chronic conditions among Dr. Tan's Medicare patients, 2024
- High cholesterol74%
- High blood pressure71%
- Diabetes33%
- Arthritis29%
- Osteoporosis24%
- Mood disorders19%
- Depression18%
- Ischemic heart disease17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women59%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michelle H. Tan wrote 2,605 Medicare Part D claims in 2024
In 2024, Dr. Tan wrote 2,605 Medicare Part D claims for 171 patients. 93% of them were for generic drugs. CMS names the drug for 2,196 of them, across 48 drugs with 11 or more claims each, at $96,115 in total drug cost. In 2023, CMS named 1,779 claims across 49 drugs.
Dr. Tan's Part D claims by kind of drug, 2024
- Generic2,431 claims93%
- Brand-name and other174 claims7%
Dr. Tan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Tan's Part D claims, 2024
- Opioids0%11 of 2,605 claims
- Antibiotics2%59 of 2,605 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,7792024: 2,19623%
Drugs named by CMS: 48 in 2024, 49 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Michelle H. Tan received $565 in industry payments from 2020 to 2025
CMS Open Payments shows 16 general payments to Dr. Tan from 3 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 100% of the total. Abiomed paid the most, $273.
General payments to Dr. Tan by program year, 2020 to 2025
Companies that paid Dr. Tan the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Michelle H. Tan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michelle H. Tan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michelle H. Tan's NPI number?
Dr. Michelle H. Tan's NPI number is 1467411959. It was assigned on March 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michelle H. Tan?
Dr. Michelle H. Tan is an internist in Gaithersburg, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michelle H. Tan practice?
Dr. Tan practices at 600 S Frederick Ave, Gaithersburg, MD 20877. Dr. Tan's primary practice is Deer Park Internal Medicine in Gaithersburg, Maryland.
What is Dr. Michelle H. Tan's office phone number?
The practice phone on file for Dr. Tan is (301) 208-1188.
What is Dr. Michelle H. Tan's medical license number?
Dr. Tan holds Maryland license D0060871.
Does Dr. Michelle H. Tan accept Medicare?
Yes. CMS data shows Dr. Tan billed Medicare for 447 services in 2024.
How many Medicare patients does Dr. Michelle H. Tan see?
CMS counts 160 Medicare patients who saw Dr. Tan in 2024, with an average age of 76.
What services does Dr. Michelle H. Tan bill to Medicare?
In 2024, Dr. Tan's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and heart test or procedure (93000).
What drugs does Dr. Michelle H. Tan prescribe most?
In 2024 Medicare Part D data, Dr. Tan's most prescribed drugs by claims were Losartan Potassium, Amlodipine Besylate and Atorvastatin Calcium.
Has Dr. Michelle H. Tan received payments from drug or device companies?
CMS Open Payments shows $565 in general payments to Dr. Tan from 3 companies from 2020 to 2025. The largest total came from Abiomed.
How long has Dr. Michelle H. Tan been practicing?
Dr. Tan graduated from medical school in 1983, 43 years ago.
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