Gregory Green, MD
NPI 1780673525 · Psychiatry Physician · Muskegon, MI
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Green, MD is a Psychiatry Physician provider in Muskegon, MI (NPI 1780673525).
Provider details
- NPI number
- 1780673525
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4301074048 (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
751 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) |
|---|---|---|
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 614 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 137 | $86 |
Typical Medicare-allowed amounts for these services range $13–$86 (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 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clozapine | 275 | 16 |
| Olanzapine | 267 | 29 |
| Paliperidone Palmitatebrand: Invega Sustenna | 178 | 27 |
| Buspirone Hcl | 146 | 20 |
| Olanzapinebrand: Olanzapine Odt | 138 | 16 |
| Lamotrigine | 129 | 12 |
| Quetiapine Fumarate | 129 | 22 |
| Benztropine Mesylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-14
- Last updated
- 2016-08-30
Frequently asked questions
- What is Gregory Green's NPI number?
- Gregory Green's National Provider Identifier (NPI) is 1780673525, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Green's specialty?
- Gregory Green is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Green located?
- Gregory Green's practice location on file with NPPES is 376 Apple Ave, Muskegon, MI 49442-3466.
- What is Gregory Green's phone number?
- The practice phone number listed in the NPPES registry for Gregory Green is (231) 724-1111.
- Does Gregory Green accept Medicare?
- Gregory Green is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Green's NPI active?
- Yes — Gregory Green's NPI (1780673525) is active in the NPPES registry as of the last update on 2016-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.