Registry data as of Aug 27, 2026

Erin O'Rourke, NP

Acute Care Nurse Practitioner · Carmichael, CA

Erin O'Rourke, NP is an acute care nurse practitioner with a practice address in Carmichael, California, and NPI 1700435237, issued on Sep 7, 2019. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1700435237
Name
Erin O'Rourke
Credential
NP
Primary taxonomy
Acute Care Nurse Practitioner 363LA2100X
Practice location
6501 Coyle Ave, Carmichael, CA 95608
Phone
(916) 537-5000
Enumerated
Sep 7, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 6501 Coyle Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Patricia Abraham-Armah, MDStudent in an Organized Health Care Education/Training Program1023950839
  2. Mina Ahmed, MDStudent in an Organized Health Care Education/Training Program1649113911
  3. Khurram Ali, M.D.Hospitalist Physician1760589790
  4. Deepika AluruAnesthesiology Physician1750313235
  5. Angel AmodoLicensed Psychiatric Technician1578246021
  6. Rayan Apelian, MDStudent in an Organized Health Care Education/Training Program1902749575

Verify Erin O'Rourke in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

74% more Medicare Part D claims than the average acute care nurse practitioner in 2024

1,087 Medicare Part D claims for 184 beneficiaries, against an average of 623 among the 12,256 providers of this specialty who prescribed in Part D. 119 claims were for opioids.

  1. Erin O'Rourke1,087
  2. Specialty average623

Most prescribed

  1. Atorvastatin Calcium60 claims
  2. Hydrocodone-Acetaminophen59 claims
  3. Gabapentin40 claims
  4. Pantoprazole Sodium36 claims
  5. Hydralazine Hcl33 claims
  6. Levothyroxine Sodium33 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.

One hospital or facility affiliation

  1. Community Health Centers OF AmericaMariposa, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Acute Care Nurse Practitioner providers in California

There are 1,703 acute care nurse practitioner records in California.

Other acute care nurse practitioner records in California

  1. Jessica AaronsonLynwood, CA1407355571
  2. Naima Abdirahman, NPLong Beach, CA1215640560
  3. Jenna Abeloe, NPVentura, CA1679090393
  4. Rhonald AbitonaSan Francisco, CA1164993473
  5. Tara Abrams, NPLos Angeles, CA1114536679
  6. Andrea Abramson, RN, CNS, NPRancho Mirage, CA1548187784
  7. Christopher Acebedo, NPSan Francisco, CA1104085109
  8. Veronica Acevedo, ACNP-BCLos Angeles, CA1588214795
  9. Mary Alice Ackerman, NP-CBeverly Hills, CA1861851958
  10. Margarita Acosta, RN, AGACNPSylmar, CA1609202415

Common questions

What is Erin O'Rourke, NP's NPI number?

Erin O'Rourke, NP's National Provider Identifier (NPI) is 1700435237, issued on Sep 7, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Erin O'Rourke, NP located?

The NPPES record lists a practice address at 6501 Coyle Ave, Carmichael, CA, 95608. Phone: (916) 537-5000. Providers update this record themselves, so call before visiting.

How can I verify Erin O'Rourke, NP's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Erin O'Rourke, NP prescribe under Medicare Part D?

In 2024, Erin O'Rourke, NP had 1,087 Medicare Part D claims for 184 beneficiaries; the average among acute care nurse practitioner prescribers was 623. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.