Michael Hafner, P.A.
NPI 1851540256 · Physician Assistant · Stillwater, OK
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Hafner, P.A. is a Physician Assistant provider in Stillwater, OK (NPI 1851540256).
Provider details
- NPI number
- 1851540256
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- No
- License
- 1771 (OK)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
106 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) |
|---|---|---|
| Partial Removal of Spine Bone With Release of Lower Spinal Cord And/Or Nerves, 1 Segment63047 | 32 | $92 |
| Fusion of Spine in Lower Back22612 | 23 | $206 |
| Insertion of Cage Or Mesh Device to Spine Bone and Disc Space During Spine Fusion22853 | 22 | $33 |
| Placement of Stabilizing Device to Back of 1 Spine Bone in Neck22840 | 16 | $98 |
| Fusion of Upper Spine Bone With Removal of Disc and Release of Spinal Cord Or Nerve, 1 Disc22551 | 13 | $221 |
Typical Medicare-allowed amounts for these services range $33–$221 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methocarbamol | 73 | 52 |
| Gabapentin | 48 | 32 |
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-09-10
- Last updated
- 2009-01-30
Frequently asked questions
- What is Michael Hafner's NPI number?
- Michael Hafner's National Provider Identifier (NPI) is 1851540256, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Hafner's specialty?
- Michael Hafner is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael Hafner located?
- Michael Hafner's practice location on file with NPPES is 511 Windsor Dr, Stillwater, OK 74074-6962.
- What is Michael Hafner's phone number?
- The practice phone number listed in the NPPES registry for Michael Hafner is (405) 707-0900.
- Does Michael Hafner accept Medicare?
- Michael Hafner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Hafner's NPI active?
- Yes — Michael Hafner's NPI (1851540256) is active in the NPPES registry as of the last update on 2009-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.