Jason Greenhagen, D.O.
NPI 1639582877 · Psychiatry Physician · Madison, AL
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Greenhagen, D.O. is a Psychiatry Physician provider in Madison, AL (NPI 1639582877).
Provider details
- NPI number
- 1639582877
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1989 (AL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
974 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 803 | $76 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 83 | $77 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 41 | $125 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 25 | $115 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 22 | $167 |
Typical Medicare-allowed amounts for these services range $76–$167 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 33 | 28 |
| Mirtazapine | 28 | 25 |
| Sertraline Hcl | 28 | 22 |
| Buspirone Hcl | 21 | 18 |
| Olanzapine | 15 | 11 |
| Duloxetine Hcl | 14 | 12 |
| Gabapentin | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$89 across 3 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
- 2014-06-05
- Last updated
- 2022-10-19
- Certified
- 2022-10-19
Frequently asked questions
- What is Jason Greenhagen's NPI number?
- Jason Greenhagen's National Provider Identifier (NPI) is 1639582877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Greenhagen's specialty?
- Jason Greenhagen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Greenhagen located?
- Jason Greenhagen's practice location on file with NPPES is 600 Sun Temple Dr, Madison, AL 35758-8643.
- What is Jason Greenhagen's phone number?
- The practice phone number listed in the NPPES registry for Jason Greenhagen is (256) 325-2627.
- Does Jason Greenhagen accept Medicare?
- Jason Greenhagen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Greenhagen's NPI active?
- Yes — Jason Greenhagen's NPI (1639582877) is active in the NPPES registry as of the last update on 2022-10-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.