Christopher Greenhagen, PA-C
NPI 1356764195 · Physician Assistant · Newkirk, OK
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Greenhagen, PA-C is a Physician Assistant provider in Newkirk, OK (NPI 1356764195).
Provider details
- NPI number
- 1356764195
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 2378 (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 tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
269 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 135 | $101 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 49 | $5 |
| Hemoglobin A1c Level83036 | 35 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 27 | $8 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 12 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 152 | 44 |
| Amlodipine Besylate | 112 | 30 |
| Omeprazole | 106 | 31 |
| Carvedilol | 98 | 23 |
| Meloxicam | 96 | 24 |
| Lisinopril | 94 | 24 |
| Gabapentin | 90 | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$59 across 2 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
Registry dates
- Enumerated
- 2014-01-30
- Last updated
- 2019-09-25
Frequently asked questions
- What is Christopher Greenhagen's NPI number?
- Christopher Greenhagen's National Provider Identifier (NPI) is 1356764195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Greenhagen's specialty?
- Christopher Greenhagen is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Christopher Greenhagen located?
- Christopher Greenhagen's practice location on file with NPPES is 716 S Highway 77, Newkirk, OK 74647-7009.
- What is Christopher Greenhagen's phone number?
- The practice phone number listed in the NPPES registry for Christopher Greenhagen is (580) 362-2555.
- Does Christopher Greenhagen accept Medicare?
- Christopher Greenhagen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Greenhagen's NPI active?
- Yes — Christopher Greenhagen's NPI (1356764195) is active in the NPPES registry as of the last update on 2019-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.