NPPES file of Aug 9, 2026

Harrison Jacob Alter, MD

Emergency Medicine Physician · Oakland, CA

Harrison Jacob Alter, MD is an emergency medicine physician with a practice address in Oakland, California, and NPI 1972584415, issued on Nov 10, 2005. Check the license (California G80744, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1972584415
Name
Harrison Jacob Alter
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
G80744 CA
Self-reported in NPPES; status is on the state search
Practice location
1404 Franklin St Ste 200, Oakland, CA 94612
Phone
(510) 891-8950
Enumerated
Nov 10, 2005
Record last updated
Jun 9, 2025
Fax
(510) 832-2104
Medicaid ID
00G807440 CA
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 1404 Franklin St Ste 200

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

  1. Camila Curtis-ContrerasRegistered Nurse1962196097
  2. Celeste De Leon-PereySocial Worker1134654445
  3. Diane Del Pozo, RN, PHNCommunity Health Registered Nurse1790414829
  4. Yvonne Leavitt, REGISTERED NURSERegistered Nurse1124516877
  5. Brittaney Leidig-JeffersonCase Manager/Care Coordinator1346129350
  6. Katrina MartinCase Manager/Care Coordinator1215762570

Verify Harrison Jacob Alter in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G80744
    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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Harrison Jacob Alter among 7,751 emergency medicine physician records in California

Harrison Jacob Alter, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 96% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2025 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

247 emergency medicine physician records list a practice address in Oakland

They are 247 of the 18,558 NPPES records with a practice address in Oakland, and 7,751 emergency medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Andrea Ajayi, MDOakland, CA 946121164413472
  2. Richard Cutler, MDOakland, CA 946121558440693
  3. Jason Fischer, M.D.Oakland, CA 946121790919959
  4. George Louie, M.D.Oakland, CA 946121851663405
  5. Alan Whippy, MDOakland, CA 946121275619702
  6. Cyrus YaminOakland, CA 946121205128618
  7. Tara Benesch, MD, MSOakland, CA 946111487117941
  8. Julia Capacci, DOOakland, CA 946111750945424

Common questions

What is Harrison Jacob Alter, MD's NPI number?

Harrison Jacob Alter, MD's National Provider Identifier (NPI) is 1972584415, issued on Nov 10, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Harrison Jacob Alter, MD located?

The NPPES record lists a practice address at 1404 Franklin St Ste 200, Oakland, CA, 94612. Phone: (510) 891-8950. Providers update this record themselves, so call before visiting.

How can I verify Harrison Jacob Alter, MD's license?

NPPES lists California license number G80744, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.