Tammy Vermeulen, NURSE PRACTITIONER
NPI 1598095143 · Acute Care Nurse Practitioner · Oklahoma City, OK
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Vermeulen, NURSE PRACTITIONER is a Acute Care Nurse Practitioner provider in Oklahoma City, OK (NPI 1598095143).
Provider details
- NPI number
- 1598095143
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NURSE PRACTITIONER
- Sex
- Female
- Sole proprietor
- No
- License
- 77115 (OK)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 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
451 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) |
|---|---|---|
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 179 | $64 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 169 | $136 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 41 | $94 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 29 | $90 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 21 | $62 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 12 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Tartrate | 23 | 16 |
| Amlodipine Besylate | 22 | 11 |
| Potassium Chloride | 19 | 11 |
| Cephalexin | 15 | 15 |
| Apixabanbrand: Eliquis | 15 | — |
| Furosemide | 15 | — |
| Metoprolol Succinate | 14 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-01-04
- Last updated
- 2021-09-28
- Certified
- 2021-09-28
Frequently asked questions
- What is Tammy Vermeulen's NPI number?
- Tammy Vermeulen's National Provider Identifier (NPI) is 1598095143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Vermeulen's specialty?
- Tammy Vermeulen is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Vermeulen located?
- Tammy Vermeulen's practice location on file with NPPES is 4221 S Western Ave Ste 4005, Oklahoma City, OK 73109-3436.
- What is Tammy Vermeulen's phone number?
- The practice phone number listed in the NPPES registry for Tammy Vermeulen is (405) 644-5040.
- Does Tammy Vermeulen accept Medicare?
- Tammy Vermeulen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Vermeulen's NPI active?
- Yes — Tammy Vermeulen's NPI (1598095143) is active in the NPPES registry as of the last update on 2021-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.