Jay Gregston, M.D.
NPI 1871581512 · Emergency Medicine Physician · Duncan, OK
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jay Gregston, M.D. is a Emergency Medicine Physician provider in Duncan, OK (NPI 1871581512).
Provider details
- NPI number
- 1871581512
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 20226 (OK)
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 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
1,565 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 473 | $117 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 258 | $16 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 244 | $40 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 140 | $82 |
| Detection Test By Immunoassay With Direct Visual Observation for Streptococcus, Group a (strep)87880 | 112 | $16 |
| X-Ray of Chest, 2 Views71046 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 97 | 25 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphet Er | 48 | 18 |
| Guanfacine Hclbrand: Guanfacine Hcl Er | 26 | 12 |
| Methylphenidate Hcl | 13 | — |
| Lisdexamfetamine Dimesylatebrand: Vyvanse | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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
- 2005-10-06
- Last updated
- 2024-01-17
- Certified
- 2024-01-17
Frequently asked questions
- What is Jay Gregston's NPI number?
- Jay Gregston's National Provider Identifier (NPI) is 1871581512, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jay Gregston's specialty?
- Jay Gregston is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jay Gregston located?
- Jay Gregston's practice location on file with NPPES is 2004 N Highway 81, Duncan, OK 73533-1460.
- What is Jay Gregston's phone number?
- The practice phone number listed in the NPPES registry for Jay Gregston is (580) 252-1911.
- Does Jay Gregston accept Medicare?
- Jay Gregston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jay Gregston's NPI active?
- Yes — Jay Gregston's NPI (1871581512) is active in the NPPES registry as of the last update on 2024-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.