Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mr. Mark I Soll, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1750367587

Mr. Mark I Soll, MD is registered under Pulmonary Disease in San Luis Obispo, California. Graduated from University of California, San Diego School of Medicine in 1986, 40 years ago. Practices with David B. Hammer, a 116-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
40
Trained at
University of California, San Diego School of Medicine
Licensed in
CA
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1304 Ella St Ste A
San Luis Obispo, CA 93401-4165
Phone: (805) 549-9555
Fax: (805) 549-0444
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 850 Fair Oaks Ave Ste 220, Arroyo Grande, CA 93420-3929 — (805) 547-2224
  • 1428 Phillips Ln Ste 203, San Luis Obispo, CA 93401-2551 — (805) 543-4407

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G62503 (CA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence G62503 (CA)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence G62503 (CA)

Record details

NPI number1750367587
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 22, 2005
Last updated in NPPESNovember 8, 2023
Certification dateMay 11, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice David B. Hammer — 116 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients620
Services billed 1,214 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $694 56 payments · a meal or drink at a meeting or visit, not a fee
Education $81 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Dignity Health Home Health Home health agency · Santa Maria, CA · listed as Dignity Health
  • Adventist Health Sierra Vista Hospital · San Luis Obispo, CA
  • Adventist Health Twin Cities Hospital · Templeton, CA
  • French Hospital Medical Center Hospital · San Luis Obispo, CA
  • Marian Regional Medical Center Hospital · Santa Maria, CA

Colleagues at David B. Hammer

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 116 clinicians in the practice; 12 are shown here.

Other providers in San Luis Obispo