Katrina Manja Whalen, ACNP-BC
Acute Care Nurse Practitioner · Los Angeles, CA
Katrina Manja Whalen, ACNP-BC is an acute care nurse practitioner with a practice address in Los Angeles, California, and NPI 1437491966, issued on Mar 22, 2013. Check the license (California 22279, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katrina Manja Whalen
- Credential
- ACNP-BC
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- 22279 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Medical Plaza, Los Angeles, CA 90095
- Phone
- (310) 825-9111
- Enumerated
- Mar 22, 2013
- Record last updated
- Feb 10, 2026
- Fax
- (424) 465-6189
- Medicare enrollment
- Enrolled (PECOS I20251230003405); may accept Medicare assignment
- Entity
- Type 1 · individual
Also registered at 100 Medical Plaza
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katrina Manja Whalen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 22279Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average acute care nurse practitioner in 2024
187 Medicare Part D claims for 63 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Furosemide36 claims
- Metoprolol Tartrate23 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.
Industry payments in 2024: $174.55
4 payments; by number, the most common kind was food and beverage; the largest payer was Abiomed. The 10,984 providers of this specialty with any payment received $647.94 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Acute Care Nurse Practitioner providers in California
There are 1,810 acute care nurse practitioner records in California.
Other acute care nurse practitioner records in California
- Jessica AaronsonLynwood, CA1407355571
- Shahrin Abdalian, NPFresno, CA1043716186
- Naima Abdirahman, NPLong Beach, CA1215640560
- Jenna Abeloe, NPVentura, CA1679090393
- Rhonald AbitonaSan Francisco, CA1164993473
- Tara Abrams, NPLos Angeles, CA1114536679
- Andrea Abramson, RN, CNS, NPRancho Mirage, CA1548187784
- Sherrell Abriam, ARNPSacramento, CA1457695132
- Christopher Acebedo, NPSan Francisco, CA1104085109
- Veronica Acevedo, ACNP-BCLos Angeles, CA1588214795
Common questions
What is Katrina Manja Whalen, ACNP-BC's NPI number?
Katrina Manja Whalen, ACNP-BC's National Provider Identifier (NPI) is 1437491966, issued on Mar 22, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Katrina Manja Whalen, ACNP-BC located?
The NPPES record lists a practice address at 100 Medical Plaza, Los Angeles, CA, 90095. Phone: (310) 825-9111. Providers update this record themselves, so call before visiting.
How can I verify Katrina Manja Whalen, ACNP-BC's license?
NPPES lists California license number 22279, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Katrina Manja Whalen, ACNP-BC prescribe under Medicare Part D?
In 2024, Katrina Manja Whalen, ACNP-BC had 187 Medicare Part D claims for 63 beneficiaries; the average among acute care nurse practitioner prescribers was 594. 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.