Gregorio Tan, MD
NPI 1316926751 · Cardiovascular Disease Physician · Kalamazoo, MI
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregorio Tan, MD is a Cardiovascular Disease Physician provider in Kalamazoo, MI (NPI 1316926751).
Provider details
- NPI number
- 1316926751
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 4301067381 (MI)
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
20 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
1,222 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) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 203 | $65 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 188 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 129 | $93 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 125 | $93 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 104 | $75 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 374 | 125 |
| Apixabanbrand: Eliquis | 272 | 77 |
| Atorvastatin Calcium | 226 | 79 |
| Metoprolol Tartrate | 208 | 73 |
| Rivaroxabanbrand: Xarelto | 189 | 35 |
| Rosuvastatin Calcium | 139 | 52 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$116 across 4 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
- 2006-01-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregorio Tan's NPI number?
- Gregorio Tan's National Provider Identifier (NPI) is 1316926751, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregorio Tan's specialty?
- Gregorio Tan is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Gregorio Tan located?
- Gregorio Tan's practice location on file with NPPES is 1722 Shaffer St, Kalamazoo, MI 49048-1633.
- What is Gregorio Tan's phone number?
- The practice phone number listed in the NPPES registry for Gregorio Tan is (269) 381-3963.
- Does Gregorio Tan accept Medicare?
- Gregorio Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregorio Tan's NPI active?
- Yes — Gregorio Tan's NPI (1316926751) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.