RALPH EUGENE GRINNELL JR. APRN, FNP-BC
NPI 1457666109
Nurse Practitioner - Family in San Antonio, TX

Q: What is Ralph Grinnell's NPI number?

The NPI number for Ralph Grinnell is 1457666109. It was assigned to this individual provider in the NPPES registry on August 18, 2010.

Q: What is Ralph Grinnell's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Ralph Grinnell was last updated on October 13, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since August 18, 2010PECOS EnrolledAccepts Medicare Assignment

5107 MEDICAL DR, SAN ANTONIO, TX 78229(210) 614-8612(210) 615-1666 Get Directions Write a Review

NPPES record last updated: October 13, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Ralph Eugene Grinnell Jr. Aprn, Fnp-bc NPPES

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

RALPH EUGENE GRINNELL JR. APRN, FNP-BC (NPI 1457666109) is an individual family provider in San Antonio, Texas, licensed in Texas (588252) and active in the NPI registry since August 2010. He is enrolled in Medicare PECOS and is a graduate of University Of Texas Medical School At San Antonio (2010).

NPPES Registry Identity

NPI1457666109

Entity TypeIndividualMale

Primary Taxonomy363LF0000X

Provider Legal NameRALPH EUGENE GRINNELL JR.Credential: APRN, FNP-BC

Location Address5107 MEDICAL DRSan Antonio, TX 78229-4801

Mailing AddressP.o. Box 87San Antonio, TX 78291 · (210) 358-9172 · Fax (210) 358-9183

Phone(210) 614-8612

Fax(210) 615-1666

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2010

Enumeration DateAugust 18, 2010

Last NPPES UpdateOctober 13, 2015

✔ NPI 1457666109 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 · 588252

5107 MEDICAL DR, San Antonio, TX 78229

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harbor Health.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

Ralph Eugene Grinnell Jr. Aprn, Fnp-bc 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.

PECOS PAC ID3577742238

PECOS Enrollment IDI20110126001139

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

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

Tmc Provider Group PLLC

2.2 mi

Urgent Care

9885 W IH 10
San Antonio, TX 78230

Reassigned Medicare billing, Texas enrollment
223 clinicians in this Medicare group

NPI 1407211295 (210) 696-5599

Community Medicine Associates

7.5 mi

Family Medicine

903 W MARTIN ST # MS 49-2
San Antonio, TX 78207

Reassigned Medicare billing, Texas enrollment
1,129 clinicians in this Medicare group

NPI 1245313329 (210) 358-3401

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 3

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.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

22 services22 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

22 services22 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 87426

An immunoassay test for severe acute respiratory syndrome coronavirus is a diagnostic tool. It uses your body's immune response to detect the presence of the virus. It involves taking a sample, usually from your nose or throat, which is then analyzed in a lab for signs of the virus.

12 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 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.

CARLEE D DUNLAP ANP

Registered Nurse