John Marshall, MD
NPI 1174515381 · Physical Medicine & Rehabilitation Physician · Novi, MI
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1174515381
- Entity type
- Individual
- Primary specialty
- Physical Medicine & Rehabilitation PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301102078 (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
296 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 133 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 117 | $91 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 29 | $93 |
| Injection of Anesthetic And/Or Steroid Drug Into Sacral Spine Nerve Root Using Imaging Guidance, Single Level64483 | 17 | $132 |
Typical Medicare-allowed amounts for these services range $91–$132 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 892 | 99 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 631 | 63 |
| Gabapentin | 374 | 71 |
| Oxycodone Hcl | 261 | 22 |
| Methocarbamol | 147 | 45 |
| Cyclobenzaprine Hcl | 135 | 29 |
| Tramadol Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-16
- Last updated
- 2025-03-05
- Certified
- 2025-03-05
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.