Dr. Leonard C. Altman, MD
- Medicare services, 2021
- 1,974
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 13
- MIPS score, 2024
- 94
- Hospital affiliations
- 2
- Practice address
- 1959 NE Pacific St Box 356151, Seattle, WA 98195
- Practice phone
- Call (206) 598-3300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Altman's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Leonard C. Altman is an allergist and immunologist in Seattle, Washington
Dr. Altman practices at UW Medical Center - Montlake in Seattle, Washington, part of University of Washington.
Dr. Altman's NPI, 1407892466, was assigned on June 20, 2006. Dr. Altman graduated from Harvard Medical School in 1969. Dr. Altman holds Washington license MD00011606.
- NPI
- 1407892466NPI Registry (opens in a new tab)
- NPI enumeration date
- June 20, 2006
- NPI status
- Active
- Practice phone
- (206) 598-3300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 83
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Leonard C. Altman practices at UW Medical Center - Montlake in Seattle, Washington
Dr. Altman's primary practice is UW Medical Center - Montlake, at 1959 NE Pacific St Box 356151, Seattle, WA 98195 in King County. The practice phone is (206) 598-3300.
- UW Medical Center - Montlake1959 NE Pacific St Box 356151, Seattle, WA 98195 · King CountyPhone(206) 598-3300
Source: Dmand AI Affiliation Data
Dr. Leonard C. Altman is affiliated with 5 sites of care and 2 medical groups
Dr. Altman's primary practice is UW Medical Center - Montlake in Seattle, Washington, part of University of Washington. The medical group on file is UW Physicians. Dmand AI also links Dr. Altman to 1 more hospital, 2 group practices and clinics, 1 hospital outpatient department and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Leonard C. Altman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Altman practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UW Medical Center - Montlake | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leonard C. Altman is one of 79 allergists and immunologists in Washington
Allergy and immunology is Dr. Altman's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Altman is licensed in Washington.
Specialties and state licenses
- Allergy and immunology, WashingtonPrimary
Allergists and immunologists near Dr. Altman
Counts of allergists and immunologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Leonard C. Altman billed Medicare for 1,974 services in 2021
CMS data shows 1,974 Medicare services from Dr. Altman across 11 procedure codes in 2021, for 12 Medicare patients. Medicare paid $57,057 for them. Every service was in an office.
Dr. Altman's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Drugs given in the office
- 2020: 1,4552021: 1,5909%
- Tests and treatments
- 2020: 2852021: 3026%
- Office and hospital visits
- 2020: 732021: 8212%
Dr. Altman compared with the Washington median for allergists and immunologists, 2021
- Dr. Altman
- Washington median
- Medicare services
- 1,974vs 1,45436% above
- Medicare patients
- 12vs 13291% below
- Part D claims
- 90vs 32472% below
Medians across 77 allergists and immunologists in Washington with Dmand AI profiles that report each measure.
Dr. Altman's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Altman and other allergists and immunologists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Leonard C. Altman treated 12 Medicare patients in 2024, average age 67
CMS counts 12 Medicare patients who saw Dr. Altman in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Altman's median patient age at 47, with 68% women.
Dr. Altman's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Altman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women68%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Leonard C. Altman wrote 13 Medicare Part D claims in 2024
In 2024, Dr. Altman wrote 13 Medicare Part D claims. They cover 5 drugs, with $17,353 in total drug cost. In 2021, CMS named 406 claims across 15 drugs.
Dr. Altman's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 4062022: 9078%
Drugs named by CMS: 5 in 2022, 15 in 2021.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Leonard C. Altman scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Altman for performance year 2024, reported through an alternative payment model (APM).
Dr. Altman's MIPS scores, performance year 2024
- 94of 100Final score
- 74.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Leonard C. Altman received $202,364 in industry payments from 2016 to 2025
CMS Open Payments shows 556 general payments to Dr. Altman from 28 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 66% of the total. Shire North American Group Inc paid the most, $129,099.
General payments to Dr. Altman by program year, 2016 to 2025
General payments to Dr. Altman by kind, 2016 to 2025
- Speaker and faculty fees$134,54866%
- Consulting fees$24,76012%
- Food and beverage$17,5419%
- Travel and lodging$16,2678%
- Honoraria$9,2505%
Companies that paid Dr. Altman the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Leonard C. Altman graduated from Harvard Medical School
Dr. Altman graduated from Harvard Medical School in 1969.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Leonard C. Altman's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Leonard C. Altman
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Leonard C. Altman's NPI number?
Dr. Leonard C. Altman's NPI number is 1407892466. It was assigned on June 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Leonard C. Altman?
Dr. Leonard C. Altman is an allergist and immunologist in Seattle, Washington. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Leonard C. Altman practice?
Dr. Altman practices at 1959 NE Pacific St Box 356151, Seattle, WA 98195. Dr. Altman's primary practice is UW Medical Center - Montlake in Seattle, Washington, part of University of Washington. Dmand AI also links Dr. Altman to 1 hospital, 2 group practices and clinics, 1 hospital outpatient department and 1 medical group.
What is Dr. Leonard C. Altman's office phone number?
The practice phone on file for Dr. Altman is (206) 598-3300.
What is Dr. Leonard C. Altman's medical license number?
Dr. Altman holds Washington license MD00011606.
Which hospitals is Dr. Leonard C. Altman affiliated with?
Dr. Altman practices at UW Medical Center - Montlake in Seattle, Washington. Dmand AI links Dr. Altman to 1 more hospital.
What medical group is Dr. Leonard C. Altman part of?
Dr. Altman is linked to UW Physicians. Dmand AI links Dr. Altman to 1 more medical group.
Does Dr. Leonard C. Altman accept Medicare?
Yes. CMS data shows Dr. Altman billed Medicare for 1,974 services in 2021.
What is Dr. Leonard C. Altman's MIPS score?
Dr. Altman's MIPS final score for performance year 2024 is 94 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Leonard C. Altman see?
CMS counts 12 Medicare patients who saw Dr. Altman in 2024, with an average age of 67.
Show 5 more questionsShow fewer questions
What services does Dr. Leonard C. Altman bill to Medicare?
In 2021, Dr. Altman's most billed Medicare services were injected or infused drug (J2357), allergy test or treatment (95165) and infusion or chemotherapy administration (96372).
Where did Dr. Leonard C. Altman go to medical school?
Dr. Altman graduated from Harvard Medical School in 1969.
What drugs does Dr. Leonard C. Altman prescribe most?
In 2022 Medicare Part D data, Dr. Altman's most prescribed drugs by claims were Breo Ellipta, Montelukast Sodium and Albuterol Sulfate Hfa.
Has Dr. Leonard C. Altman received payments from drug or device companies?
CMS Open Payments shows $202,364 in general payments to Dr. Altman from 28 companies from 2016 to 2025. The largest total came from Shire North American Group Inc.
How long has Dr. Leonard C. Altman been practicing?
Dr. Altman graduated from medical school in 1969, 57 years ago.
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