Gregory Oxenkrug, M.D.
NPI 1891805073 · Psychiatry Physician · Newton, MA
Gregory Oxenkrug, M.D. is a Psychiatry Physician provider in Newton, MA (NPI 1891805073).
Provider details
- NPI number
- 1891805073
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 47504 (MA)
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
19 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
33 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 33 | $196 |
Typical Medicare-allowed amounts for these services range $196–$196 (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 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 68 | 11 |
| Lorazepam | 48 | — |
| Duloxetine Hcl | 42 | — |
| Mirtazapine | 36 | — |
| Gabapentin | 27 | — |
| Alprazolam | 24 | — |
| Escitalopram Oxalate | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2024-12-19
Frequently asked questions
- What is Gregory Oxenkrug's NPI number?
- Gregory Oxenkrug's National Provider Identifier (NPI) is 1891805073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Oxenkrug's specialty?
- Gregory Oxenkrug is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Oxenkrug located?
- Gregory Oxenkrug's practice location on file with NPPES is 100 Olde Field Rd., Newton, MA 02459.
- What is Gregory Oxenkrug's phone number?
- The practice phone number listed in the NPPES registry for Gregory Oxenkrug is (617) 775-1663.
- Is Gregory Oxenkrug's NPI active?
- Yes — Gregory Oxenkrug's NPI (1891805073) is active in the NPPES registry as of the last update on 2024-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.