NPPES file of Aug 9, 2026

Alejo Santa Cruz, M.D.

Hospitalist Physician · Berkeley, CA

Alejo Santa Cruz, M.D. is a hospitalist physician with a practice address in Berkeley, California, and NPI 1740398973, issued on Aug 28, 2006. Check the license (California A80536, as entered in NPPES) on the Medical Board of California; 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
1740398973
Name
Alejo Santa Cruz
Credential
M.D.
Primary taxonomy
Hospitalist Physician 208M00000X
License number
A80536 CA
Self-reported in NPPES; status is on the state search
Practice location
2450 Ashby Ave RM 5505, Berkeley, CA 94705
Phone
(510) 204-4444
Enumerated
Aug 28, 2006
Record last updated
Jul 21, 2022
Fax
(510) 649-8287
Medicaid ID
00A805360 CA
Medicare enrollment
Enrolled (PECOS I20040323001477); accepts Medicare assignment
Medical or professional school
University Of Southern California Keck School Of Medicine, 2001
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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Also registered at 2450 Ashby Ave RM 5505

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

  1. Tamika Bailey, MDHospitalist Physician1487972550
  2. Lisa Chandler, MDInternal Medicine Physician1720376395
  3. Cecilia Hernandez, MDHospitalist Physician1851493688
  4. Feeiwen Hsiao, M.D.Hospitalist Physician1124180302
  5. Gerard Jenkins, M.D.Hospitalist Physician1154648285
  6. Michael Labarbera, MD, PHD, MPHHospitalist Physician1548722796

Verify Alejo Santa Cruz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A80536
    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
Open 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.

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35% fewer Medicare Part D claims than the average hospitalist physician in 2024

337 Medicare Part D claims for 158 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 25 claims were for opioids.

  1. Alejo Santa Cruz337
  2. Specialty average521

Most prescribed

  1. Cephalexin22 claims
  2. Levofloxacin22 claims
  3. Pantoprazole Sodium22 claims
  4. Amoxicillin-Clavulanate Potass16 claims
  5. Hydrocodone-Acetaminophen16 claims
  6. Doxycycline Hyclate15 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. Sutter Bay Medical FoundationBerkeley, CA

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

Alejo Santa Cruz among 3,099 hospitalist physician records in California

Alejo Santa Cruz, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 73% newer
  • In a Medicare fileYes · 90% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated2001 · median 2010 among the 2,505 with a school on file
  • Record last updated2022 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospitalist Physician providers in California

There are 3,099 hospitalist physician records in California.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Marina Atala, M.D.Berkeley, CA 947051992722359
  2. Trissa Baden, MDBerkeley, CA 947051801898283
  3. Ursula Boynton, M.D.Berkeley, CA 947051083722680
  4. Valerie Curtis, MDBerkeley, CA 947051013081629
  5. Cecilia Hernandez, MDBerkeley, CA 947051851493688
  6. Feeiwen Hsiao, M.D.Berkeley, CA 947051124180302
  7. Carol Livingston, MDBerkeley, CA 947051306801477
  8. Michelle Miller, MDBerkeley, CA 947051326126236

Common questions

What is Alejo Santa Cruz, M.D.'s NPI number?

Alejo Santa Cruz, M.D.'s National Provider Identifier (NPI) is 1740398973, issued on Aug 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alejo Santa Cruz, M.D. located?

The NPPES record lists a practice address at 2450 Ashby Ave RM 5505, Berkeley, CA, 94705. Phone: (510) 204-4444. Providers update this record themselves, so call before visiting.

How can I verify Alejo Santa Cruz, M.D.'s license?

NPPES lists California license number A80536, 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 Alejo Santa Cruz, M.D. prescribe under Medicare Part D?

In 2024, Alejo Santa Cruz, M.D. had 337 Medicare Part D claims for 158 beneficiaries; the average among hospitalist physician prescribers was 521. 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.