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DR. GREGORY A PARKER M.D.
NPI 1972544625
Internal Medicine - Hematology & Oncology in Oklahoma City, OK

Active since June 10, 2006PECOS Enrolled
3525 NW 56TH ST, SUITE D100, OKLAHOMA CITY, OK 73112(405) 942-9200(405) 949-1483 Get Directions Write a Review

NPPES record last updated: May 12, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Gregory A Parker M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY A PARKER M.D. (NPI 1972544625) is an individual hematology & oncology provider in Oklahoma City, Oklahoma, licensed in Oklahoma (14781) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1972544625
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. GREGORY A PARKERCredential: M.D.
Location Address3525 NW 56TH ST, SUITE D100Oklahoma City, OK 73112-4550
Mailing Address3525 Nw 56th St, Suite D100Oklahoma City, OK 73112-4550 · (405) 942-9200 · Fax (405) 949-1483
Phone(405) 942-9200
Fax(405) 949-1483
Sole ProprietorNo
Enumeration DateJune 10, 2006
Last NPPES UpdateMay 12, 2014
✔ NPI 1972544625 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in OK · 14781
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
3525 NW 56TH ST, Oklahoma City, OK 73112
Open in Google Maps ↗

Other Identifiers 2

Medicare ID-Type Unspecified244307803OK
Medicare UPIND42725OK

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gregory A Parker M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 73112 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$162.61 typical visit price
range $53.00 – $162.61
Typical copayment $40.65 (range $13.25 – $40.65)
Most-billed visit code 99205
Established Patient
$94.27 typical visit price
range $16.68 – $132.40
Typical copayment $23.56 (range $4.17 – $33.10)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KIMBERLY ANN FOX AU.D., CCC-A
Audiologist-Hearing Aid Fitter
3525 NW 56TH ST, STE 150A
OKLAHOMA CITY, OK 73112
Oklahoma County (405) 548-4300
MISS ALEDA A TOMA M.D.
Internal Medicine (Medical Oncology)
3525 NW 56TH ST, SUITE D100
OKLAHOMA CITY, OK 73112
Oklahoma County (405) 942-9200
INTEGRIS BAPTIST MEDICAL CENTER
Clinic/Center (Medical Specialty)
3525 NW 56TH ST, C100
OKLAHOMA CITY, OK 73112
Oklahoma County (405) 945-0045
DR. CHARLES W HOLLEN M.D.
Internal Medicine (Hematology & Oncology)
3525 NW 56TH ST, SUITE D 100
OKLAHOMA CITY, OK 73112
Oklahoma County (405) 942-9200
DR. SAADIA CHOHAN MD
Internal Medicine (Hematology & Oncology)
3525 NW 56TH ST
OKLAHOMA CITY, OK 73112
Oklahoma County (405) 942-9200
JESSICA A BALLARD
Audiologist
3525 NW 56TH ST, A-150
OKLAHOMA CITY, OK 73112
Oklahoma County (405) 548-4300
WENDELYN L DEMOSS CCC-SLP
Speech-Language Pathologist
3525 NW 56TH ST, A-150
OKLAHOMA CITY, OK 73112
Oklahoma County (405) 548-4300
TERESA H CARAWAY PHD
Speech-Language Pathologist
3525 NW 56TH ST, A-150
OKLAHOMA CITY, OK 73112
Oklahoma County (405) 548-4300

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 Gregory Parker's NPI number?

The NPI number for Gregory Parker is 1972544625. It was assigned to this individual provider in the NPPES registry on June 10, 2006.

Where is Gregory Parker located?

Gregory Parker practices at 3525 NW 56th St Suite D100, Oklahoma City, OK 73112. The listed phone number is (405) 942-9200.

What is Gregory Parker's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Gregory Parker enrolled in Medicare?

Yes. Gregory Parker is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gregory Parker was last updated on May 12, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.