Dr. John A. Lenahan, MD
- Medicare services, 2020
- 493
- Part D claims, 2024
- 11
- Industry payments
- $124
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 595 Buckingham Way Ste 404 Suite 404, San Francisco, CA 94132-1912
- Practice phone
- Call (415) 665-1180
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John A. Lenahan, MD, Inc.
Physician office · San Francisco, California
Find Dr. Lenahan'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. John A. Lenahan is a dermatologist in San Francisco, California
Dr. Lenahan practices at John A. Lenahan, MD, Inc. in San Francisco, California.
Dr. Lenahan's NPI, 1710023692, was assigned on January 29, 2007. Dr. Lenahan graduated from Creighton University School of Medicine - Omaha in 1967. Dr. Lenahan's California license number on file is G15296.
- NPI
- 1710023692NPI Registry (opens in a new tab)
- NPI enumeration date
- January 29, 2007
- NPI status
- Active
- Practice phone
- (415) 665-1180
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1967
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John A. Lenahan practices at John A. Lenahan, MD, Inc. in San Francisco, California
Dr. Lenahan's primary practice is John A. Lenahan, MD, Inc., at 595 Buckingham Way Ste 404 Suite 404, San Francisco, CA 94132-1912. The practice phone is (415) 665-1180.
- John A. Lenahan, MD, Inc.595 Buckingham Way Ste 404 Suite 404, San Francisco, CA 94132-1912Phone(415) 665-1180
Source: Dmand AI Affiliation Data
Dr. John A. Lenahan is affiliated with 1 site of care
Dr. Lenahan's primary practice is John A. Lenahan, MD, Inc. in San Francisco, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John A. Lenahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lenahan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John A. Lenahan, MD, Inc. | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John A. Lenahan is one of 1,910 dermatologists in California
Dermatology is Dr. Lenahan's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Lenahan is board certified in dermatology by the American Board of Dermatology. Dr. Lenahan has a license on file in California.
Specialties and state licenses
- Dermatology, CaliforniaPrimary
Dermatologists near Dr. Lenahan
Counts of dermatologists 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. John A. Lenahan billed Medicare for 493 services in 2020
CMS data shows 493 Medicare services from Dr. Lenahan across 8 procedure codes in 2020. Medicare paid $26,038 for them.
Dr. Lenahan's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Surgery
- 2019: 1,2762020: 29577%
- Office and hospital visits
- 2019: 9692020: 19880%
- Lab and pathology
- 2019: 372020: 0100%
- Tests and treatments
- 2019: 132020: 0100%
Where Dr. Lenahan's Medicare services took place, 2020
- In an office43187%
- In a facility6213%
Dr. Lenahan compared with the California median for dermatologists, 2020
- Dr. Lenahan
- California median
- Medicare services
- 493vs 1,75072% below
- Part D claims
- 110vs 36770% below
Medians across 1,831 dermatologists in California with Dmand AI profiles that report each measure.
Dr. Lenahan's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Lenahan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lenahan and other dermatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John A. Lenahan's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Lenahan's median patient age at 58, with 80% women.
Dr. Lenahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women80%
- Men20%
Source: Dmand AI Patient Panel Data
Dr. John A. Lenahan wrote 11 Medicare Part D claims in 2024
In 2024, Dr. Lenahan wrote 11 Medicare Part D claims. They cover 5 drugs, with $7,231 in total drug cost. In 2019, CMS named 235 claims across 11 drugs.
Dr. Lenahan's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 2352020: 11053%
Drugs named by CMS: 5 in 2020, 11 in 2019.
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
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Dr. John A. Lenahan received $124 in industry payments from 2017 to 2019
CMS Open Payments shows 3 general payments to Dr. Lenahan from 3 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. Stemline Therapeutics Inc. paid the most, $86.
General payments to Dr. Lenahan by program year, 2017 to 2019
Companies that paid Dr. Lenahan the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John A. Lenahan has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Lenahan, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Lenahan
- 2013
- CMS Stage 1 EHR
- Undated
- AAD Fellow
- ASDS Fellow
Source: Dmand AI Professional Profile Data
Dr. John A. Lenahan graduated from Creighton University School of Medicine - Omaha
Dr. Lenahan graduated from Creighton University School of Medicine - Omaha in 1967. Dr. Lenahan is a member of AAD and ASDS.
- Medical school
- Board certified in dermatology
- Board certified in dermatopathology
Source: Dmand AI Professional Profile Data
Sources for Dr. John A. Lenahan'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 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 Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. John A. Lenahan
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. John A. Lenahan's NPI number?
Dr. John A. Lenahan's NPI number is 1710023692. It was assigned on January 29, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John A. Lenahan?
Dr. John A. Lenahan is a dermatologist in San Francisco, California. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. John A. Lenahan practice?
Dr. Lenahan practices at 595 Buckingham Way Ste 404 Suite 404, San Francisco, CA 94132-1912. Dr. Lenahan's primary practice is John A. Lenahan, MD, Inc. in San Francisco, California.
What is Dr. John A. Lenahan's office phone number?
The practice phone on file for Dr. Lenahan is (415) 665-1180.
What is Dr. John A. Lenahan's medical license number?
Dr. Lenahan's California license number on file is G15296.
Does Dr. John A. Lenahan accept Medicare?
Yes. CMS data shows Dr. Lenahan billed Medicare for 493 services in 2020.
Is Dr. John A. Lenahan board certified?
Yes. Dr. Lenahan is board certified in dermatology by the American Board of Dermatology.
What services does Dr. John A. Lenahan bill to Medicare?
In 2020, Dr. Lenahan's most billed Medicare services were surgery: skin and soft tissue (17003), office visit, established patient (99214) and office visit, established patient (99215).
Where did Dr. John A. Lenahan go to medical school?
Dr. Lenahan graduated from Creighton University School of Medicine - Omaha in 1967.
What drugs does Dr. John A. Lenahan prescribe most?
In 2020 Medicare Part D data, Dr. Lenahan's most prescribed drugs by claims were Metronidazole, Methotrexate and Halobetasol Propionate.
Has Dr. John A. Lenahan received payments from drug or device companies?
CMS Open Payments shows $124 in general payments to Dr. Lenahan from 3 companies from 2017 to 2019. The largest total came from Stemline Therapeutics Inc.
How long has Dr. John A. Lenahan been practicing?
Dr. Lenahan graduated from medical school in 1967, 59 years ago.
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