Ryan Acker, DO
NPI 1659949303 · Emergency Medicine Physician · Tulsa, OK
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Acker, DO is a Emergency Medicine Physician provider in Tulsa, OK (NPI 1659949303).
Provider details
- NPI number
- 1659949303
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 22 | 22 |
| Meloxicam | 17 | 17 |
| Prednisone | 16 | 16 |
| Doxycycline Hyclate | 13 | 13 |
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
Additional practice locations (2)
- 200 2nd Ave SwMiami, OK 74354-6830Phone: (918) 542-6611
- 1323 W 6th AveStillwater, OK 74074-4306Phone: (405) 742-5454Fax: (405) 742-5454
Registry dates
- Enumerated
- 2021-06-17
- Last updated
- 2025-08-20
- Certified
- 2025-08-20
Frequently asked questions
- What is Ryan Acker's NPI number?
- Ryan Acker's National Provider Identifier (NPI) is 1659949303, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Acker's specialty?
- Ryan Acker is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Acker located?
- Ryan Acker's practice location on file with NPPES is 1111 W 17th St, Tulsa, OK 74107-1886.
- What is Ryan Acker's phone number?
- The practice phone number listed in the NPPES registry for Ryan Acker is (918) 561-1232.
- Does Ryan Acker accept Medicare?
- Ryan Acker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Acker's NPI active?
- Yes — Ryan Acker's NPI (1659949303) is active in the NPPES registry as of the last update on 2025-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.