NPPES file of Aug 9, 2026

Mark Chester Hartmann, PA-C

Medical Physician Assistant · Solana Beach, CA

Mark Chester Hartmann, PA-C is a medical physician assistant with a practice address in Solana Beach, California, and NPI 1033385117, issued on May 7, 2008. Check the license (California PA16511, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033385117
Name
Mark Chester Hartmann
Credential
PA-C
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
PA16511 CA
Self-reported in NPPES; status is on the state search
Practice location
380 Stevens Ave Ste 100, Solana Beach, CA 92075
Phone
(858) 554-9800
Enumerated
May 7, 2008
Record last updated
Feb 25, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(858) 755-5522
Medicare enrollment
Enrolled (PECOS I20050615000315); accepts Medicare assignment
Medical or professional school
University Of California, Davis School Of Medicine, 2002
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 380 Stevens Ave Ste 100

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Aleksandriya Demenko, MDFamily Medicine Physician1104837426
  2. Hessam Khalili Tabrizi, M.D.Family Medicine Physician1528269081
  3. Philip Sanderson, M.D.Family Medicine Physician1487634515

Verify Mark Chester Hartmann in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA16511
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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18% fewer Medicare Part D claims than the average medical physician assistant in 2024

941 Medicare Part D claims for 311 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 33 claims were for opioids.

  1. Mark Hartmann941
  2. Specialty average1,148

Most prescribed

  1. Azithromycin49 claims
  2. Zolpidem Tartrate41 claims
  3. Alprazolam37 claims
  4. Losartan Potassium29 claims
  5. Rosuvastatin Calcium29 claims
  6. Escitalopram Oxalate25 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.

Industry payments in 2024: $2,261.10

38 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 16,165 providers of this specialty with any payment received $1,055.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Hartmann$2,261.10
  2. Specialty average$1,055.00

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

  1. Scripps HealthSolana Beach, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Chester Hartmann among 3,376 medical physician assistant records in California

Mark Chester Hartmann, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 32% of them.

  • NPI issued2008 · 32% of these records are older, 62% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2002 · median 2012 among the 1,347 with a school on file
  • Record last updated2014 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in California

There are 3,376 medical physician assistant records in California.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Makayla Hill-Arnaiz, PA-C, MMS, RT(T)Solana Beach, CA 920751811215999
  2. Joanna Lee, PA-CSan Marcos, CA 920781245487248
  3. Sarah Mott, MMS, PA-CSan Marcos, CA 920781346491958
  4. Brittany Sumerel, PA-CSan Marcos, CA 920781497105696
  5. Nicole Newcomb, PA-C, ASWSantee, CA 920711265864268
  6. Breanna Price, PA-CSantee, CA 920711235851056
  7. Kristen Trower, PHYSICIAN ASSISTANTSantee, CA 920711902149495
  8. Gary Chiswick, P.A.San Marcos, CA 920691174964001

Common questions

What is Mark Chester Hartmann, PA-C's NPI number?

Mark Chester Hartmann, PA-C's National Provider Identifier (NPI) is 1033385117, issued on May 7, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Mark Chester Hartmann, PA-C located?

The NPPES record lists a practice address at 380 Stevens Ave Ste 100, Solana Beach, CA, 92075. Phone: (858) 554-9800. Providers update this record themselves, so call before visiting.

How can I verify Mark Chester Hartmann, PA-C's license?

NPPES lists California license number PA16511, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Mark Chester Hartmann, PA-C prescribe under Medicare Part D?

In 2024, Mark Chester Hartmann, PA-C had 941 Medicare Part D claims for 311 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.