Christopher Crosby, M.D., PH.D.
Dermatology Physician · La Mesa, CA
Christopher Crosby, M.D., PH.D. is a dermatology physician with a practice address in La Mesa, California, and NPI 1497931380, issued on Jan 10, 2008. Check the license (California A107312, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Crosby
- Credential
- M.D., PH.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- A107312 CA
058457 GA
Self-reported in NPPES; status is on the state search - Practice location
- 8860 Center Dr, La Mesa, CA 91942
- Phone
- (619) 462-1670
- Enumerated
- Jan 10, 2008
- Entity
- Type 1 · individual
Also registered at 8860 Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Firas Alhaddad, MDStudent in an Organized Health Care Education/Training Program1295963460
- Robert BushmanDermatology Physician1578561692
- Maki GoskowiczMOHS-Micrographic Surgery Physician1821096942
- Harold Gulbransen, DDSProsthodontics1215047469
- Vincent Guzzetta, MDVascular Surgery Physician1578657482
- Fadi HaddadInfectious Disease Physician1689692956
Verify Christopher Crosby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A107312Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
58% fewer Medicare Part D claims than the average dermatology physician in 2024
334 Medicare Part D claims for 192 beneficiaries, against an average of 799 among the 11,754 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Doxycycline Hyclate57 claims
- Cephalexin41 claims
- Mupirocin40 claims
- Ciclopirox21 claims
- Ketoconazole18 claims
- Triamcinolone Acetonide18 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.
No measured Medicare quality score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $952.85
39 payments, mostly food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C.. The 9,431 providers of this specialty with any payment received $8,593.06 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.
One hospital or facility affiliation
- Grossmont Dermatology Medical ClinicLa Mesa, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Dermatology Physician providers in California
There are 2,004 dermatology physician records in California.
Other dermatology physician records in California
- Sumaira Aasi, MDStanford, CA1780675181
- Christopher Abbott, M.D.San Diego, CA1578866885
- Eman Abdallah, D.O.Los Angeles, CA1528321957
- Farah Abdulla, MDDuarte, CA1093934390
- Sayyida Abdus-Salaam, M.D.Daly City, CA1114241296
- Robert Abergel, M.D.Santa Monica, CA1841565843
- Glynis Ablon, M.D.Manhattan Beach, CA1144292889
- Arthur Abrams, MDMountain View, CA1518093178
- Aseel Abu-NasserRedding, CA1609641711
- Faud Abuabara, M.D.Mountain View, CA1164472890
Common questions
What is Christopher Crosby, M.D., PH.D.'s NPI number?
Christopher Crosby, M.D., PH.D.'s National Provider Identifier (NPI) is 1497931380, issued on Jan 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Crosby, M.D., PH.D. located?
The NPPES record lists a practice address at 8860 Center Dr, La Mesa, CA, 91942. Phone: (619) 462-1670. Providers update this record themselves, so call before visiting.
How can I verify Christopher Crosby, M.D., PH.D.'s license?
NPPES lists California license number A107312, 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 Christopher Crosby, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Christopher Crosby, M.D., PH.D. had 334 Medicare Part D claims for 192 beneficiaries; the average among dermatology physician prescribers was 799. Part D covers Medicare prescriptions only.
What is Christopher Crosby, M.D., PH.D.'s Medicare quality score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.