Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Kenneth Hammers Marsh, MD

Individual provider Anesthesiology Physician · NPI 1720664147

Kenneth Hammers Marsh, MD practises Anesthesiology in San Diego, California. Graduated from New York Medical College in 2021, 5 years ago. Practices with Anesthesia Service Medical Group, a 237-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
5
Trained at
New York Medical College
Licensed in
CA
In the registry since
2021
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

3626 Ruffin Rd
San Diego, CA 92123-1810
Phone: (858) 565-9666
Fax: (858) 565-9441
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A179882 (CA)

Record details

NPI number1720664147
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 24, 2021
Last updated in NPPESJuly 9, 2025
Certification dateJuly 9, 2025

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 2021 (5 years in practice)
Group practice Anesthesia Service Medical Group — 237 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 $25 1 payment · a meal or drink at a meeting or visit, 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.

Colleagues at Anesthesia Service Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 237 clinicians in the practice; 12 are shown here.

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