Olesia Nikolyevna Grellner, APRN-CNP
Family Nurse Practitioner · Oklahoma City, OK
Olesia Nikolyevna Grellner, APRN-CNP is a family nurse practitioner with a practice address in Oklahoma City, Oklahoma, and NPI 1114185659, issued on May 31, 2008. Check the license (Oklahoma 90690, as entered in NPPES) with the Oklahoma board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Olesia Nikolyevna Grellner
- Credential
- APRN-CNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 90690 OK
Self-reported in NPPES; status is on the state search - Practice location
- 2625 General Pershing Blvd, Oklahoma City, OK 73107
- Phone
- (405) 945-6225
- Enumerated
- May 31, 2008
- Record last updated
- Jan 3, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,711 in Oklahoma → Look up another NPI →
Also registered at 2625 General Pershing Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley BrittainPeer Specialist1427540053
- Alexei DiggsPeer Specialist1164359444
- Cortney EllisonPeer Specialist1902622459
- Edgar GonzalezPeer Specialist1346043213
- Aaron GraceCase Manager/Care Coordinator1760254569
- Michael HandCase Manager/Care Coordinator1467335778
Verify Olesia Nikolyevna Grellner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
Search for license 90690Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Olesia Nikolyevna Grellner among 2,711 family nurse practitioner records in Oklahoma
Olesia Nikolyevna Grellner, APRN-CNP is one of 2,711 family nurse practitioner records with a practice address in Oklahoma. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2008, is newer than 8% of them.
- NPI issued2008 · 8% of these records are older, 90% newer
- In a Medicare fileNo · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2017 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
577 family nurse practitioner records list a practice address in Oklahoma City
They are 577 of the 22,359 NPPES records with a practice address in Oklahoma City, and 2,711 family nurse practitioner records in Oklahoma. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,711 in Oklahoma → Every provider in Oklahoma City → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Jade DunnOklahoma City, OK 731071821404377
- Nissy Mathew, APRNOklahoma City, OK 731071689020067
- Helen Mboh, NPOklahoma, OK 731071962738666
- Renae McElrath, FNP, APRNOklahoma City, OK 731071639848492
- Keely McGough, DNPOklahoma City, OK 731071578162921
- Maghen Mitchell, NP-COklahoma City, OK 731071689068371
- Xiomara Porras, RNOklahoma City, OK 731071245581883
- Beth Reagan Matherly, ARNPOklahoma City, OK 731071497045165
Common questions
What is Olesia Nikolyevna Grellner, APRN-CNP's NPI number?
Olesia Nikolyevna Grellner, APRN-CNP's National Provider Identifier (NPI) is 1114185659, issued on May 31, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Olesia Nikolyevna Grellner, APRN-CNP located?
The NPPES record lists a practice address at 2625 General Pershing Blvd, Oklahoma City, OK, 73107. Phone: (405) 945-6225. Providers update this record themselves, so call before visiting.
How can I verify Olesia Nikolyevna Grellner, APRN-CNP's license?
NPPES lists Oklahoma license number 90690, as entered by the provider. Search the Oklahoma board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.