NPPES file of Aug 9, 2026

Sylvia Singer, MD

Pediatric Hematology & Oncology Physician · Oakland, CA

Sylvia Singer, MD is a pediatric hematology & oncology physician with a practice address in Oakland, California, and NPI 1619031523, issued on Dec 22, 2006. Check the license (California A50306, 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 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1619031523
Name
Sylvia Singer
Credential
MD
Primary taxonomy
Pediatric Hematology & Oncology Physician 2080P0207X
License number
A50306 CA
Self-reported in NPPES; status is on the state search
Practice location
747 52ND Street, Oakland, CA 94609
Phone
(510) 428-3372
Enumerated
Dec 22, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(510) 601-3916
Medicaid ID
00A503060 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 747 52ND Street

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

  1. Christine Aguilar, MDRehabilitation Practitioner1619058237
  2. Nancy Curtis, M.D.Specialist1548356348
  3. Sarah DurneyStudent in an Organized Health Care Education/Training Program1013546472
  4. James Feusner, MDPediatric Hematology & Oncology Physician1720142854
  5. Elizabeth Gleghorn, M.D.Pediatric Gastroenterology Physician1093809659
  6. Carla GoldenPediatric Hematology & Oncology Physician1811086945

Verify Sylvia Singer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A50306
    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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No measured MIPS final score for 2023

CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Sylvia Singer among 417 pediatric hematology & oncology physician records in California

Sylvia Singer, MD is one of 417 pediatric hematology & oncology physician records with a practice address in California. 53% 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, 65% newer
  • In a Medicare fileYes · 53% of these records are
  • In the CMS Doctors and Clinicians fileNo · 29% of these records are
  • Record last updated2007 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0207X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Hematology & Oncology Physician providers in California

There are 417 pediatric hematology & oncology physician records in California.

The 8 pediatric hematology & oncology physician records with the nearest ZIP codes

  1. Barbara Beach, M.D.Oakland, CA 946091831246206
  2. James Feusner, MDOakland, CA 946091720142854
  3. Jacob Garcia, MDOakland, CA 946091750491585
  4. Carla GoldenOakland, CA 946091811086945
  5. Caroline Hastings, MDOakland, CA 946091386733418
  6. Carolyn Hoppe, MDOakland, CA 946091538245329
  7. Ashutosh Lal, M.D.Oakland, CA 946091023048469
  8. Alison Matsunaga, MDOakland, CA 946091770655078

Common questions

What is Sylvia Singer, MD's NPI number?

Sylvia Singer, MD's National Provider Identifier (NPI) is 1619031523, issued on Dec 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sylvia Singer, MD located?

The NPPES record lists a practice address at 747 52ND Street, Oakland, CA, 94609. Phone: (510) 428-3372. Providers update this record themselves, so call before visiting.

How can I verify Sylvia Singer, MD's license?

NPPES lists California license number A50306, 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.

What is Sylvia Singer, MD's MIPS final score?

CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.

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.