NPPES file of Aug 9, 2026

Derald L. Seid, D.O

Internal Medicine Physician · San Francisco, CA

Derald L. Seid, D.O is an internal medicine physician with a practice address in San Francisco, California, and NPI 1831361047, issued on Mar 27, 2008. Check the license (California 020A47840, 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
1831361047
Name
Derald L. Seid
Credential
D.O
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
020A47840 CA
Self-reported in NPPES; status is on the state search
Practice location
2250 Hayes St, San Francisco, CA 94117
Phone
(415) 221-1901
Enumerated
Mar 27, 2008
Record last updated
May 11, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(415) 221-1903
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 2250 Hayes St

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

  1. Pedro Aceves-Casillas, M.D.Internal Medicine Physician1144252396
  2. William Breall, M.D.Cardiovascular Disease Physician1124042635
  3. Kwok Chan, M.D.Internal Medicine Physician1063413714
  4. James Chun, M.D.Cardiovascular Disease Physician1134143506
  5. Joel Clark, DPMPodiatrist1093773681
  6. Peter Curran, MDCardiovascular Disease Physician1366422347

Verify Derald L. Seid in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 020A47840
    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

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94% fewer Medicare Part D claims than the average internal medicine physician in 2024

198 Medicare Part D claims for 20 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Derald Seid198
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium36 claims
  2. Amlodipine Besylate17 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.

Derald L. Seid among 17,696 internal medicine physician records in California

Derald L. Seid, D.O is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.

  • NPI issued2008 · 56% of these records are older, 40% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2015 · 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 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,318 internal medicine physician records list a practice address in San Francisco

They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Pedro Aceves-Casillas, M.D.San Francisco, CA 941171144252396
  2. Charles Allison, M.D.San Francisco, CA 941171376541060
  3. Carl Bricca, D.O.San Francisco, CA 941171114925385
  4. Robert BrodySan Francisco, CA 941171801815600
  5. Kwok Chan, M.D.San Francisco, CA 941171063413714
  6. Diana Hilbert, M.D.San Francisco, CA 941171386642551
  7. William Kell, M.DSan Francisco, CA 941171528094547
  8. Kenneth Maybury, M.D.San Francisco, CA 941171295733459

Common questions

What is Derald L. Seid, D.O's NPI number?

Derald L. Seid, D.O's National Provider Identifier (NPI) is 1831361047, issued on Mar 27, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Derald L. Seid, D.O located?

The NPPES record lists a practice address at 2250 Hayes St, San Francisco, CA, 94117. Phone: (415) 221-1901. Providers update this record themselves, so call before visiting.

How can I verify Derald L. Seid, D.O's license?

NPPES lists California license number 020A47840, 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 Derald L. Seid, D.O prescribe under Medicare Part D?

In 2024, Derald L. Seid, D.O had 198 Medicare Part D claims for 20 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.