NPPES file of Aug 9, 2026

David Unold, M.D.

Blood Banking & Transfusion Medicine Physician · Sacramento, CA

David Unold, M.D. is a blood banking & transfusion medicine physician with a practice address in Sacramento, California, and NPI 1851534457, issued on Apr 13, 2009. Check the license (California A131802, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851534457
Name
David Unold
Credential
M.D.
Primary taxonomy
Blood Banking & Transfusion Medicine Physician 207ZB0001X
License number
A131802 CA
Self-reported in NPPES; status is on the state search
Practice location
2315 Stockton Blvd, Sacramento, CA 95817
Phone
(916) 734-9200
Enumerated
Apr 13, 2009
Record last updated
Jun 28, 2017 (not updated in 9 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20170808000021); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 2009
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 2315 Stockton Blvd

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

  1. Erik Abrames, M.D.Diagnostic Radiology Physician1558342337
  2. Angel Acevedo Carrasco, PAPhysician Assistant1316523319
  3. Lyndsey Ackerman, NPPediatric Nurse Practitioner1619630464
  4. Jason Adams, M.D.Critical Care Medicine (Internal Medicine) Physician1134367568
  5. Sindhu Addepalli, MDInternal Medicine Physician1306405501
  6. Joseph Adducci, PA-CPhysician Assistant1023672342

Verify David Unold in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A131802
    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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Bills Medicare through one group practice

  1. Regents OF The Univ OF CASacramento, CA

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

David Unold among 54 blood banking & transfusion medicine physician records in California

David Unold, M.D. is one of 54 blood banking & transfusion medicine physician records with a practice address in California. 44% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 44% of them.

  • NPI issued2009 · 44% of these records are older, 48% newer
  • In a Medicare fileYes · 44% of these records are
  • In the CMS Doctors and Clinicians fileYes · 39% of these records are
  • Graduated2009 · median 2011 among the 21 with a school on file
  • Record last updated2017 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZB0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Blood Banking & Transfusion Medicine Physician providers in California

There are 54 blood banking & transfusion medicine physician records in California.

The 8 blood banking & transfusion medicine physician records with the nearest ZIP codes

  1. Sarah Barnhard, MDSacramento, CA 958171598082711
  2. Grace Monis, MD, PHDSacramento, CA 958171003070061
  3. Wesley Rubenstein, DOSacramento, CA 958171588153134
  4. Furkan Yigitbilek, MDSacramento, CA 958171871173625
  5. Christopher Gresens, MDMather, CA 956551508383597
  6. Catherine Mazzei, MDOakland, CA 946181750802013
  7. Andrew Jones, MDOakland, CA 946091043691421
  8. Paul Holland, M.D.Walnut Creek, CA 945951740770916

Common questions

What is David Unold, M.D.'s NPI number?

David Unold, M.D.'s National Provider Identifier (NPI) is 1851534457, issued on Apr 13, 2009. An NPI identifies a provider in billing; it is not a license.

Where is David Unold, M.D. located?

The NPPES record lists a practice address at 2315 Stockton Blvd, Sacramento, CA, 95817. Phone: (916) 734-9200. Providers update this record themselves, so call before visiting.

How can I verify David Unold, M.D.'s license?

NPPES lists California license number A131802, 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. 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.