James Mackenzie, MD
NPI 1548251168 · Internal Medicine Physician · Troy, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Mackenzie, MD is a Internal Medicine Physician provider in Troy, MI (NPI 1548251168).
Provider details
- NPI number
- 1548251168
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 4301030901 (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
756 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 287 | $91 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 155 | $130 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 147 | $19 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 83 | $128 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 43 | $90 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 41 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 93 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 378 | 111 |
| Lisinopril | 297 | 81 |
| Levothyroxine Sodium | 222 | 59 |
| Amlodipine Besylate | 220 | 68 |
| Metformin Hcl | 175 | 52 |
| Omeprazole | 156 | 40 |
| Simvastatin | 136 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$114 across 1 record (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
- 2005-11-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Mackenzie's NPI number?
- James Mackenzie's National Provider Identifier (NPI) is 1548251168, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Mackenzie's specialty?
- James Mackenzie is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Mackenzie located?
- James Mackenzie's practice location on file with NPPES is 1380 Coolidge Hwy, Troy, MI 48084-7018.
- What is James Mackenzie's phone number?
- The practice phone number listed in the NPPES registry for James Mackenzie is (248) 288-4000.
- Does James Mackenzie accept Medicare?
- James Mackenzie is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Mackenzie's NPI active?
- Yes — James Mackenzie's NPI (1548251168) 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.