NPPES file of Aug 9, 2026

Darla A. Grimes, RN, FNP-C

Nurse Practitioner · Austin, TX

Darla A. Grimes, RN, FNP-C is a nurse practitioner with a practice address in Austin, Texas, and NPI 1164737961, issued on Aug 17, 2010. Check the license (Texas 664729, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164737961
Name
Darla A. Grimes
Credential
RN, FNP-C
Primary taxonomy
Nurse Practitioner 363L00000X
License number
664729 TX
Self-reported in NPPES; status is on the state search
Practice location
1807 Slaughter Lane # 490, Austin, TX 78748
Phone
(512) 282-8967
Enumerated
Aug 17, 2010
Record last updated
Feb 20, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(512) 406-7351
Medicaid ID
282288401 TX
Medicare enrollment
Enrolled (PECOS I20110603000349); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Darla A. Grimes in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 664729
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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83% fewer Medicare Part D claims than the average nurse practitioner in 2024

193 Medicare Part D claims for 52 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Darla Grimes193
  2. Specialty average1,109

Most prescribed

  1. Atorvastatin Calcium23 claims
  2. Levothyroxine Sodium13 claims
  3. Rosuvastatin Calcium12 claims
  4. Omeprazole11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Austin Regional Clinic PAAustin, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Darla A. Grimes among 4,825 nurse practitioner records in Texas

Darla A. Grimes, RN, FNP-C is one of 4,825 nurse practitioner records with a practice address in Texas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 22% of them.

  • NPI issued2010 · 22% of these records are older, 76% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 54% of these records are
  • Graduated2010 · median 2018 among the 2,618 with a school on file
  • Record last updated2017 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in Texas

There are 4,825 nurse practitioner records in Texas.

The 8 nurse practitioner records with the nearest ZIP codes

  1. Omobolaji Awoniyi, NPAustin, TX 787481477110443
  2. Virginia Coy, APNAustin, TX 787481609953330
  3. Pilar Puron LujoAustin, TX 787481699650945
  4. Debra Barnett, RNC FNPAustin, TX 787491972573657
  5. Kaylynn Grysen, FNP-CAustin, TX 787491801519566
  6. Krista Jacobs, FNPAustin, TX 787491730839028
  7. Hannah MerkelAustin, TX 787491326838137
  8. Lori NovickiAustin, TX 787491538745161

Common questions

What is Darla A. Grimes, RN, FNP-C's NPI number?

Darla A. Grimes, RN, FNP-C's National Provider Identifier (NPI) is 1164737961, issued on Aug 17, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Darla A. Grimes, RN, FNP-C located?

The NPPES record lists a practice address at 1807 Slaughter Lane # 490, Austin, TX, 78748. Phone: (512) 282-8967. Providers update this record themselves, so call before visiting.

How can I verify Darla A. Grimes, RN, FNP-C's license?

NPPES lists Texas license number 664729, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Darla A. Grimes, RN, FNP-C prescribe under Medicare Part D?

In 2024, Darla A. Grimes, RN, FNP-C had 193 Medicare Part D claims for 52 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.