Allison May Lloyd-McLennan, MD
Dermatology Physician · Palo Alto, CA
Allison May Lloyd-McLennan, MD is a dermatology physician with a practice address in Palo Alto, California, and NPI 1639530942, issued on Mar 14, 2016. Check the license (California A163594, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allison May Lloyd-McLennan
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- A163594 CA
9282 NE
Self-reported in NPPES; status is on the state search - Practice location
- 725 Welch RD, Palo Alto, CA 94304
- Phone
- (650) 497-8000
- Enumerated
- Mar 14, 2016
- Record last updated
- Mar 30, 2026
- Medicare enrollment
- Enrolled (PECOS I20251208000733); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 725 Welch RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shayda Abadi, NPNurse Practitioner1316745540
- Natasha AbadillaStudent in an Organized Health Care Education/Training Program1194306928
- Alexandra Abbott, MDPediatrics Physician1760018675
- Steven Abboud, MDAnesthesiology Physician1619364908
- Ali Abdelhafiz Abdelsamea, MDPediatrics Physician1699390104
- Alireza Abdollah Shamshirsaz, M.D.Obstetrics & Gynecology Physician1881804235
Verify Allison May Lloyd-McLennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A163594Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average dermatology physician in 2024
107 Medicare Part D claims for 44 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Dupixent Pen18 claims
- Ketoconazole11 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.
Allison May Lloyd-McLennan among 2,083 dermatology physician records in California
Allison May Lloyd-McLennan, MD is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 80% of them.
- NPI issued2016 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2018 · median 2006 among the 1,450 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in Palo Alto → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Miguel Canales, M.D.Palo Alto, CA 943041053776740
- Diana Chen, M.D.Palo Alto, CA 943041235229683
- Kathie Huang, M.D.Palo Alto, CA 943041376739268
- Christine Jacobson, MDPalo Alto, CA 943041376756031
- Jinwoo Lee, MDPalo Alto, CA 943041366079956
- Daniel Navi, M.D.Palo Alto, CA 943041215121280
- Eric Smith, M.D.Palo Alto, CA 943041114997277
- Qisi Sun, MDPalo Alto, CA 943041093396665
Common questions
What is Allison May Lloyd-McLennan, MD's NPI number?
Allison May Lloyd-McLennan, MD's National Provider Identifier (NPI) is 1639530942, issued on Mar 14, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Allison May Lloyd-McLennan, MD located?
The NPPES record lists a practice address at 725 Welch RD, Palo Alto, CA, 94304. Phone: (650) 497-8000. Providers update this record themselves, so call before visiting.
How can I verify Allison May Lloyd-McLennan, MD's license?
NPPES lists California license number A163594, 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 Allison May Lloyd-McLennan, MD prescribe under Medicare Part D?
In 2024, Allison May Lloyd-McLennan, MD had 107 Medicare Part D claims for 44 beneficiaries; the average among dermatology physician prescribers was 797. 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.