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MRS. PETRA GRINNELL APRN, FNP-BC
NPI 1386959120
Nurse Practitioner - Family in San Antonio, TX

Active since August 17, 2010PECOS Enrolled
1303 MCCULLOUGH AVE, SUITE 374, SAN ANTONIO, TX 78212(210) 223-5483(210) 223-5492 Get Directions Write a Review

NPPES record last updated: December 27, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mrs. Petra Grinnell Aprn, Fnp-bc NPPES

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

MRS. PETRA GRINNELL APRN, FNP-BC (NPI 1386959120) is an individual family provider in San Antonio, Texas, licensed in Texas (550234) and active in the NPI registry since August 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1386959120
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. PETRA GRINNELLCredential: APRN, FNP-BC
Location Address1303 MCCULLOUGH AVE, SUITE 374San Antonio, TX 78212-5615
Mailing Address1303 Mccullough Ave, Suite 374San Antonio, TX 78212-5615 · (210) 223-5483 · Fax (210) 223-5492
Phone(210) 223-5483
Fax(210) 223-5492
Sole ProprietorNo
Enumeration DateAugust 17, 2010
Last NPPES UpdateDecember 27, 2011
✔ NPI 1386959120 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 TX · 550234
1303 MCCULLOUGH AVE, San Antonio, TX 78212
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Community First, Oscar Insurance Company and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Petra Grinnell Aprn, Fnp-bc 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 Petra Grinnell reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Endocrinology Nuclear Medicine Associates PA
Same address
Endocrinology, Diabetes & Metabolism
1303 MCCULLOUGH AVE, SUITE 374
San Antonio, TX 78212
  • Reassigned Medicare billing, Texas enrollment
  • 6 clinicians in this Medicare group
NPI 1366581589 (210) 223-5483
Barrio Comprehensive Family Health Care Center, Inc
0.1 mi
Federally Qualified Health Center (FQHC)
1200 BROOKLYN AVE STE 300
San Antonio, TX 78212
  • Reassigned Medicare billing, Texas enrollment
  • 268 clinicians in this Medicare group
NPI 1003228750 (210) 225-5930

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 78212 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
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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 20

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

DR. ROBERT JAY MAGNON M.D.
Dermatology
1303 MCCULLOUGH AVE, SUITE 525
SAN ANTONIO, TX 78212
Bexar County (210) 225-2769
DR. DANIEL A CALDERON M.D.
Obstetrics & Gynecology
1303 MCCULLOUGH AVE, SUITE GL70
SAN ANTONIO, TX 78212
Bexar County (210) 226-9705
PETER J WILLIAMS DPM
Podiatrist (Foot & Ankle Surgery)
1303 MCCULLOUGH AVE, SUITE 348
SAN ANTONIO, TX 78212
Bexar County (210) 227-4164
FIRST DIABETES SUPPLY, LLC
Durable Medical Equipment & Medical Supplies
1303 MCCULLOUGH AVE
SAN ANTONIO, TX 78212
Bexar County (512) 448-1255
MARK A ISAEFF M.D.
Internal Medicine
1303 MCCULLOUGH AVE, SUITE 542
SAN ANTONIO, TX 78212
Bexar County (210) 572-4431
ALAMO CITY CARDIOVASCULAR SURGEONS
Specialist
1303 MCCULLOUGH AVE, SUITE 270
SAN ANTONIO, TX 78212
Bexar County (210) 932-1487
ROLAND R. GARCIA D.D.S.
Dentist (General Practice)
1303 MCCULLOUGH AVE, SUITE 230
SAN ANTONIO, TX 78212
Bexar County (210) 226-9521
SAN ANTONIO INTERNAL MEDICINE PHYSICIANS, PLLC
Internal Medicine
1303 MCCULLOUGH AVE, SUITE #560
SAN ANTONIO, TX 78212
Bexar County (210) 223-9617

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 Petra Grinnell's NPI number?

The NPI number for Petra Grinnell is 1386959120. It was assigned to this individual provider in the NPPES registry on August 17, 2010.

Where is Petra Grinnell located?

Petra Grinnell practices at 1303 Mccullough Ave Suite 374, San Antonio, TX 78212. The listed phone number is (210) 223-5483.

What is Petra Grinnell's specialty?

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

Is Petra Grinnell enrolled in Medicare?

Yes. Petra Grinnell is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Petra Grinnell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Petra Grinnell reassigns Medicare benefits to 2 organizations: Endocrinology Nuclear Medicine Associates PA (San Antonio, TX) and Barrio Comprehensive Family Health Care Center, Inc (San Antonio, TX). 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 Petra Grinnell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Petra Grinnell accept?

Health plans from Blue Cross and Blue Shield of Texas, Community First, Oscar Insurance Company and UnitedHealthcare list Petra Grinnell 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.

When was this NPI record last updated?

The NPPES record for Petra Grinnell was last updated on December 27, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.