Tammy Williams, APRN, FNP-C
NPI 1720526437 · Family Nurse Practitioner · Oklahoma City, OK
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Williams, APRN, FNP-C is a Family Nurse Practitioner provider in Oklahoma City, OK (NPI 1720526437).
Provider details
- NPI number
- 1720526437
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 0083947 (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 tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
6 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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 12 | — |
| Methylprednisolone | 11 | 11 |
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 (5)
- 7 N MainKingston, OK 73439Phone: (405) 642-1747Fax: (405) 692-4390
- 6951 Se 15th StMidwest City, OK 73110-2748Phone: (405) 233-0450
- 7317 S Western AveOklahoma City, OK 73139-2007Phone: (405) 251-8884
- 3138 S Garnett RdTulsa, OK 74146-1933Phone: (918) 203-7005
- 2235 E 61st St Ste BTulsa, OK 74136-0102Phone: (539) 476-9802
Registry dates
- Enumerated
- 2017-02-02
- Last updated
- 2025-09-25
- Certified
- 2025-09-25
Frequently asked questions
- What is Tammy Williams's NPI number?
- Tammy Williams's National Provider Identifier (NPI) is 1720526437, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Williams's specialty?
- Tammy Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Williams located?
- Tammy Williams's practice location on file with NPPES is 4629 Nw 23rd St, Oklahoma City, OK 73127-2103.
- What is Tammy Williams's phone number?
- The practice phone number listed in the NPPES registry for Tammy Williams is (405) 251-8880.
- Does Tammy Williams accept Medicare?
- Tammy Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Williams's NPI active?
- Yes — Tammy Williams's NPI (1720526437) is active in the NPPES registry as of the last update on 2025-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.