DR. JOHN WILLIAM ERVIN M.D.
NPI 1629061213
Obstetrics & Gynecology in Tulsa, OK
About Dr. John William Ervin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN WILLIAM ERVIN M.D. (NPI 1629061213) is an individual obstetrics & gynecology provider in Tulsa, Oklahoma, licensed in Oklahoma (33711) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Integris Grove Hospital, and maintains a secondary practice location in Hood River.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John William Ervin M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show John Ervin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tulsa, OK 74104
- Reassigned Medicare billing, Oklahoma enrollment
- 68 clinicians in this Medicare group
Oklahoma City, OK 73134
- Reassigned Medicare billing, Oklahoma enrollment
- 1,058 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Integris Grove Hospital
Acute Care Hospitals · Grove, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74135 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TULSA, OK 74135
TULSA, OK 74135
TULSA, OK 74135
TULSA, OK 74135
TULSA, OK 74135
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Ervin's NPI number?
The NPI number for John Ervin is 1629061213. It was assigned to this individual provider in the NPPES registry on August 30, 2005.
Where is John Ervin located?
John Ervin practices at 4444 E 41st St, Tulsa, OK 74135. The listed phone number is (918) 619-4400.
What is John Ervin's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is John Ervin enrolled in Medicare?
Yes. John Ervin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Ervin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Ervin reassigns Medicare benefits to 2 organizations: Obhg Oklahoma, P.C. (Tulsa, OK) and Integris Ambulatory Care Corporation (Oklahoma City, OK). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Ervin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Ervin accept?
Health plans from Blue Cross and Blue Shield of Oklahoma, CommunityCare, Mending Health and UnitedHealthcare list John Ervin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Ervin affiliated with any hospitals?
According to CMS data, John Ervin is affiliated with Integris Grove Hospital.
When was this NPI record last updated?
The NPPES record for John Ervin was last updated on August 29, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John William Ervin, M.D. · NPI 1629061213
Obstetrics & Gynecology physician in Tulsa, Oklahoma. Individual provider, active in the CMS NPPES registry since August 30, 2005.
## Identity
- **NPI:** 1629061213 (Entity type: Individual)
- **Enumerated:** August 30, 2005
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 33711 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 4444 E 41ST ST, Tulsa, OK 74135-2527
- **Phone:** (918) 619-4400
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Obhg Oklahoma, P.C. (NPI 1043595374, Tulsa, OK); Integris Ambulatory Care Corporation (NPI 1750333936, Oklahoma City, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ponce School Of Medicine, class of 1999
## Record status
- **NPPES last updated:** August 29, 2018
- **Other identifiers:** Medicaid 878690060A (GA); Medicaid 500694558 (OR)
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Source: [NPI Profile](https://npiprofile.com/npi/1629061213) · Data from the CMS NPPES public registry.