Alfredo Castellanos, M.D.
Critical Care Medicine (Internal Medicine) Physician · Whittier, CA
Alfredo Castellanos, M.D. is a critical care medicine (internal medicine) physician with a practice address in Whittier, California, and NPI 1700088770, issued on Jun 1, 2007. Check the license (California A95095, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alfredo Castellanos
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- A95095 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12462 Putnam St, Whittier, CA 90602
- Phone
- (562) 789-5470
- Enumerated
- Jun 1, 2007
- Record last updated
- Jul 13, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (562) 789-4480
- Medicare enrollment
- Enrolled (PECOS I20100917000951); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 12462 Putnam St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Avanta Collier, MDDermatology Physician1942356548
- Angela Granados, CNMAdvanced Practice Midwife1265784698
- Andrew Hsiao, M.D.Sports Medicine (Orthopaedic Surgery) Physician1457535940
Verify Alfredo Castellanos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A95095Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
21 Medicare Part D claims, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 67% of 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 2 group practices
- Pih Health PhysiciansWhittier, CA
- Whittier Pulmonary And Critical Care Medical Group, Inc.Whittier, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alfredo Castellanos among 723 critical care medicine (internal medicine) physician records in California
Alfredo Castellanos, M.D. is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 46% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2004 · median 2005 among the 559 with a school on file
- Record last updated2010 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Whittier → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Daniel Akhavan, MDWhittier, CA 906021154384105
- Nadeem Chishti, M.D.Whittier, CA 906021700815461
- Hussein Nassr, MDWhittie, CA 906021821124454
- Kiumars Saketkhoo, MDWhittier, CA 906021093782518
- Maryam Zamanian, MDWhittier, CA 906021184672461
- Manohar Senra, M.D.Pico Rivera, CA 906601750575296
- Anthony Arredondo, M.D.Torrance, CA 905091164689972
- Charles Lanks, M.D.Torrance, CA 905091912199712
Common questions
What is Alfredo Castellanos, M.D.'s NPI number?
Alfredo Castellanos, M.D.'s National Provider Identifier (NPI) is 1700088770, issued on Jun 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Alfredo Castellanos, M.D. located?
The NPPES record lists a practice address at 12462 Putnam St, Whittier, CA, 90602. Phone: (562) 789-5470. Providers update this record themselves, so call before visiting.
How can I verify Alfredo Castellanos, M.D.'s license?
NPPES lists California license number A95095, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alfredo Castellanos, M.D. prescribe under Medicare Part D?
In 2024, Alfredo Castellanos, M.D. had 21 Medicare Part D claims; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.