Michael Tan, MD
NPI 1669499208 · Internal Medicine Physician · Morristown, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Tan, MD is a Internal Medicine Physician provider in Morristown, TN (NPI 1669499208).
Provider details
- NPI number
- 1669499208
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 33933 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,138 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 449 | $65 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 264 | $110 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 174 | $117 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 156 | $78 |
| Nursing Facility Discharge Day Management, 30 Minutes Or Less99315 | 59 | $71 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 217 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 900 | 179 |
| Levothyroxine Sodium | 855 | 180 |
| Gabapentin | 620 | 120 |
| Apixabanbrand: Eliquis | 587 | 83 |
| Pantoprazole Sodium | 564 | 137 |
| Metoprolol Tartrate | 499 | 107 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$347 across 7 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-17
- Last updated
- 2010-05-27
Frequently asked questions
- What is Michael Tan's NPI number?
- Michael Tan's National Provider Identifier (NPI) is 1669499208, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Tan's specialty?
- Michael Tan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Tan located?
- Michael Tan's practice location on file with NPPES is 854 West 7th North St, Morristown, TN 37814-3850.
- What is Michael Tan's phone number?
- The practice phone number listed in the NPPES registry for Michael Tan is (423) 581-7119.
- Does Michael Tan accept Medicare?
- Michael Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Tan's NPI active?
- Yes — Michael Tan's NPI (1669499208) is active in the NPPES registry as of the last update on 2010-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.