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TAMMY ANN HARRELSON APRN-CNP
NPI 1003045501
Nurse Practitioner - Family in Oklahoma City, OK

Active since July 07, 2009PECOS Enrolled
14000 N PORTLAND AVE, SUITE 201, OKLAHOMA CITY, OK 73134(405) 606-2727(405) 606-7040 Get Directions Write a Review

NPPES record last updated: June 19, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Tammy Ann Harrelson Aprn-cnp NPPES

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

TAMMY ANN HARRELSON APRN-CNP (NPI 1003045501) is an individual family provider in Oklahoma City, Oklahoma, licensed in Oklahoma (F0609168) and active in the NPI registry since July 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003045501
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameTAMMY ANN HARRELSONCredential: APRN-CNP
Location Address14000 N PORTLAND AVE, SUITE 201Oklahoma City, OK 73134-4003
Mailing Address8121 National Ave, Suite 206Midwest City, OK 73110-7530 · (405) 606-2727 · Fax (405) 606-7040
Phone(405) 606-2727
Fax(405) 606-7040
Sole ProprietorNo
Enumeration DateJuly 7, 2009
Last NPPES UpdateJune 19, 2013
✔ NPI 1003045501 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in OK · F0609168
14000 N PORTLAND AVE, Oklahoma City, OK 73134
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tammy Ann Harrelson Aprn-cnp 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.

Medicare Billing Reassignments

2

Medicare enrollment records show Tammy Harrelson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ou Health Partners, Inc
10 mi
Multi-Specialty
1200 CHILDRENS AVE STE 11200
Oklahoma City, OK 73104
  • Reassigned Medicare billing, Oklahoma enrollment
  • 1,795 clinicians in this Medicare group
NPI 1528642642 (405) 271-3932
Board Of Regents Of The University Of Oklahoma - Ou Physicians
10 mi
Multi-Specialty
825 NE 10TH ST
Oklahoma City, OK 73104
  • Reassigned Medicare billing, Oklahoma enrollment
  • 845 clinicians in this Medicare group
NPI 1801869250 (405) 271-3932

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 73134 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
$82.46 typical visit price
range $53.00 – $162.61
Typical copayment $20.61 (range $13.25 – $40.65)
Most-billed visit code 99203
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 5

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

MRS. DEBORAH ANNE STEPHENS MS, RD/LD
Dietitian, Registered
14000 N PORTLAND AVE, SUITE 205
OKLAHOMA CITY, OK 73134
Oklahoma County (405) 548-4848
OKLAHOMA SLEEP INSTITUTE CLINIC - SHAWNEE
Nurse Practitioner
14000 N PORTLAND AVE, SUITE 201
OKLAHOMA CITY, OK 73134
Oklahoma County (405) 606-2727
AMERITA, INC.
Pharmacy (Home Infusion Therapy Pharmacy)
14000 N PORTLAND AVE, SUITE 205
OKLAHOMA CITY, OK 73134
Oklahoma County (405) 548-4848
MRS. SUZANNE M TAPP RD,LD, CNSC
Dietitian, Registered
14000 N PORTLAND AVE, SUITE 205
OKLAHOMA CITY, OK 73134
Oklahoma County (405) 312-2326
DR. STERLING BAKER M.D.
Ophthalmology
14000 N PORTLAND AVE, SUITE 101
OKLAHOMA CITY, OK 73134
Oklahoma County (405) 521-0041

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 Tammy Harrelson's NPI number?

The NPI number for Tammy Harrelson is 1003045501. It was assigned to this individual provider in the NPPES registry on July 7, 2009.

Where is Tammy Harrelson located?

Tammy Harrelson practices at 14000 N Portland Ave Suite 201, Oklahoma City, OK 73134. The listed phone number is (405) 606-2727.

What is Tammy Harrelson's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Tammy Harrelson enrolled in Medicare?

Yes. Tammy Harrelson is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Tammy Harrelson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Harrelson reassigns Medicare benefits to 2 organizations: Ou Health Partners, Inc (Oklahoma City, OK) and Board Of Regents Of The University Of Oklahoma - Ou Physicians (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 Tammy Harrelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Tammy Harrelson was last updated on June 19, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.