Gregory Zemenick, MD
NPI 1396735510 · Orthopaedic Surgery Physician · Troy, MI
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Zemenick, MD is a Orthopaedic Surgery Physician provider in Troy, MI (NPI 1396735510).
Provider details
- NPI number
- 1396735510
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4301030702 (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
9 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,897 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) |
|---|---|---|
| X-Ray of Knee, 1-2 Views73560 | 407 | $34 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 396 | $128 |
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 244 | $39 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 242 | $78 |
| X-Ray of Pelvis, 1-2 Views72170 | 217 | $27 |
| X-Ray of Upper Spine, 2-3 Views72040 | 92 | $39 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 23 | 14 |
| Ibuprofen | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$251 across 14 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
Additional practice locations (8)
- 17877 W 14 Mile RdBeverly Hills, MI 48025-3127Phone: (248) 644-3920Fax: (844) 598-9632
- 24255 W 13 Mile Rd Ste 100Bingham Farms, MI 48025-4345Phone: (248) 988-8085Fax: (844) 598-9635
- 26750 Providence Pkwy Ste 220Novi, MI 48374-1212Phone: (248) 596-0412Fax: (833) 471-5849
- 30575 Woodward AveRoyal Oak, MI 48073-0980Phone: (248) 280-8550Fax: (844) 266-0093
- 45816 Schoenherr RdShelby Twp, MI 48315-6028Phone: (586) 842-2400Fax: (833) 561-1976
- 26025 Lahser Rd Fl 2Southfield, MI 48033-2606Phone: (248) 663-1900Fax: (844) 598-9633
- 4967 Crooks Rd Ste 100Troy, MI 48098-5812Phone: (248) 846-8060Fax: (833) 303-1612
- 33200 W 14 Mile Rd Ste 220West Bloomfield, MI 48322-3586
Registry dates
- Enumerated
- 2005-10-27
- Last updated
- 2026-04-24
- Certified
- 2026-04-24
Frequently asked questions
- What is Gregory Zemenick's NPI number?
- Gregory Zemenick's National Provider Identifier (NPI) is 1396735510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Zemenick's specialty?
- Gregory Zemenick is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Zemenick located?
- Gregory Zemenick's practice location on file with NPPES is 1350 Kirts Blvd Ste 160, Troy, MI 48084-4852.
- What is Gregory Zemenick's phone number?
- The practice phone number listed in the NPPES registry for Gregory Zemenick is (248) 244-9426.
- Does Gregory Zemenick accept Medicare?
- Gregory Zemenick is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Zemenick's NPI active?
- Yes — Gregory Zemenick's NPI (1396735510) is active in the NPPES registry as of the last update on 2026-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.