Leonard C. Altman, M.D.
Allergy & Immunology Physician · Seattle, WA
Leonard C. Altman, M.D. is an allergy & immunology physician with a practice address in Seattle, Washington, and NPI 1407892466, issued on Jun 20, 2006. Check the license (Washington MD00011606, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Leonard C. Altman
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- MD00011606 WA
Self-reported in NPPES; status is on the state search - Practice location
- 9725 3RD Ave NE Ste 500, Seattle, WA 98115
- Phone
- (206) 527-1200
- Enumerated
- Jun 20, 2006
- Record last updated
- Sep 3, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (206) 527-0535
- Medicaid ID
- 8378507 WA
- Medicare enrollment
- Enrolled (PECOS I20100813000974); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1969
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 90 in Washington → Look up another NPI →
Also registered at 9725 3RD Ave NE Ste 500
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pandora Christie, MDAllergy Physician1851385132
- Daniel GrothAllergy & Immunology Physician1821476979
- Michele Hinatsu, ARNPMedical Physician Assistant1265562573
- Ashley Jerath Tatum, M.D.Allergy & Immunology Physician1174559686
- Bani Preet Kaur, M.D.Allergy & Immunology Physician1346544392
- Mary Lasley, M.D.Allergy & Immunology Physician1396787925
Verify Leonard C. Altman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00011606Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
13 Medicare Part D claims, against an average of 741 among the 2,899 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.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $5,747.79
37 payments; by number, the most common kind was food and beverage; the largest payer was Pharming Healthcare, Inc. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- The Association OF University PhysiciansSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leonard C. Altman among 90 allergy & immunology physician records in Washington
Leonard C. Altman, M.D. is one of 90 allergy & immunology physician records with a practice address in Washington. 70% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 40% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated1969 · median 2002 among the 46 with a school on file
- Record last updated2019 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Washington
There are 90 allergy & immunology physician records in Washington.
All 90 in Washington → Every provider in Seattle → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Daniel GrothSeattle, WA 981151821476979
- Ashley Jerath Tatum, M.D.Seattle, WA 981151174559686
- Bani Preet Kaur, M.D.Seattle, WA 981151346544392
- Mary Lasley, M.D.Seattle, WA 981151396787925
- Audrey Park, MD,PH.DSeattle, WA 981151902016314
- Daniel Petroni, M.D., PH.D.Seattle, WA 981151073808028
- Sara Seghezzo, M.D.Seattle, WA 981151962822874
- Jay Sprenger, M.D.Seattle, WA 981151306893334
Common questions
What is Leonard C. Altman, M.D.'s NPI number?
Leonard C. Altman, M.D.'s National Provider Identifier (NPI) is 1407892466, issued on Jun 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard C. Altman, M.D. located?
The NPPES record lists a practice address at 9725 3RD Ave NE Ste 500, Seattle, WA, 98115. Phone: (206) 527-1200. Providers update this record themselves, so call before visiting.
How can I verify Leonard C. Altman, M.D.'s license?
NPPES lists Washington license number MD00011606, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leonard C. Altman, M.D. prescribe under Medicare Part D?
In 2024, Leonard C. Altman, M.D. had 13 Medicare Part D claims; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Leonard C. Altman, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.