Henry D. Slosser, MD
Anatomic Pathology & Clinical Pathology Physician · Pasadena, CA
Henry D. Slosser, MD is an anatomic pathology & clinical pathology physician with a practice address in Pasadena, California, and NPI 1881622470, issued on Jun 30, 2006. Check the license (California WG36885, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Henry D. Slosser
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- WG36885 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 W California Blvd, Pasadena, CA 91105
- Phone
- (626) 397-5000
- Enumerated
- Jun 30, 2006
- Record last updated
- Mar 29, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (626) 397-2156
- Medicaid ID
- G368850 CA
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 1,554 in California → Look up another NPI →
Also registered at 100 W California Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Vahe Aghajanyan, M.D.Student in an Organized Health Care Education/Training Program1447047238
- Ignacio Aguilar, RNFARegistered Nurse First Assistant1497583603
Verify Henry D. Slosser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license WG36885Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average anatomic pathology & clinical pathology physician in 2024
46 Medicare Part D claims, against an average of 192 among the 401 providers of this specialty who prescribed in Part D.
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.
Henry D. Slosser among 1,554 anatomic pathology & clinical pathology physician records in California
Henry D. Slosser, MD is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 57% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2013 · 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 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in California
There are 1,554 anatomic pathology & clinical pathology physician records in California.
All 1,554 in California → Every provider in Pasadena → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Sanaz Ainechi, MDPasadena, CA 911051710329883
- Sophia Apple, MDPasadena, CA 911051861437683
- Parakrama Chandrasoma, M.D.Pasadena, CA 911051467446013
- Danielle Lu, MDPasadena, CA 911051194753004
- Susan Murakami, MDPasadena, CA 911051770517641
- Parisa Najafzadeh, MDPasadena, CA 911051700319944
- Brit Shackley, M.D.Pasadena, CA 911051336460435
- Sachiv Sheth, M.D.Pasadena, CA 911051477794808
Common questions
What is Henry D. Slosser, MD's NPI number?
Henry D. Slosser, MD's National Provider Identifier (NPI) is 1881622470, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Henry D. Slosser, MD located?
The NPPES record lists a practice address at 100 W California Blvd, Pasadena, CA, 91105. Phone: (626) 397-5000. Providers update this record themselves, so call before visiting.
How can I verify Henry D. Slosser, MD's license?
NPPES lists California license number WG36885, 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 Henry D. Slosser, MD prescribe under Medicare Part D?
In 2024, Henry D. Slosser, MD had 46 Medicare Part D claims; the average among anatomic pathology & clinical pathology physician prescribers was 192. 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.