Heather Hallmark, MSN, APRN-C, AGPCNP
NPI 1922505593 · Nurse Practitioner · Oklahoma City, OK
Heather Hallmark, MSN, APRN-C, AGPCNP is a Nurse Practitioner provider in Oklahoma City, OK (NPI 1922505593).
Provider details
- NPI number
- 1922505593
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, APRN-C, AGPCNP
- Sex
- Female
- Sole proprietor
- No
- License
- 99801 (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
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-10
- Last updated
- 2022-02-09
- Certified
- 2022-02-09
Frequently asked questions
- What is Heather Hallmark's NPI number?
- Heather Hallmark's National Provider Identifier (NPI) is 1922505593, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Heather Hallmark's specialty?
- Heather Hallmark is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Heather Hallmark located?
- Heather Hallmark's practice location on file with NPPES is 921 Ne 13th St, Oklahoma City, OK 73104-5007.
- What is Heather Hallmark's phone number?
- The practice phone number listed in the NPPES registry for Heather Hallmark is (405) 456-3409.
- Is Heather Hallmark's NPI active?
- Yes — Heather Hallmark's NPI (1922505593) is active in the NPPES registry as of the last update on 2022-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.