Brian Gietzen, MD
NPI 1639154263 · Internal Medicine Physician · Rochester Hills, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Gietzen, MD is a Internal Medicine Physician provider in Rochester Hills, MI (NPI 1639154263).
Provider details
- NPI number
- 1639154263
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4301070159 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,320 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Blood Test, Clotting Time85610 | 399 | $4 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 303 | $130 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 154 | $134 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 119 | $15 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 89 | $137 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 36 | 13 |
| Levothyroxine Sodium | 23 | 11 |
| Apixabanbrand: Eliquis | 18 | — |
| Pantoprazole Sodium | 17 | — |
| Potassium Chloride | 17 | — |
| Donepezil Hcl | 16 | — |
| Amlodipine Besylate | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-06
- Last updated
- 2020-10-06
- Certified
- 2020-10-06
Frequently asked questions
- What is Brian Gietzen's NPI number?
- Brian Gietzen's National Provider Identifier (NPI) is 1639154263, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Gietzen's specialty?
- Brian Gietzen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Gietzen located?
- Brian Gietzen's practice location on file with NPPES is 1460 Walton Blvd, Rochester Hills, MI 48309-1768.
- What is Brian Gietzen's phone number?
- The practice phone number listed in the NPPES registry for Brian Gietzen is (248) 650-1800.
- Does Brian Gietzen accept Medicare?
- Brian Gietzen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Gietzen's NPI active?
- Yes — Brian Gietzen's NPI (1639154263) is active in the NPPES registry as of the last update on 2020-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.