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DR. MARK SAMUEL KATSMA DO
NPI 1326571969
Orthopaedic Surgery - Pediatric Orthopaedic Surgery in San Diego, CA

Active since April 11, 2017PECOS Enrolled
34800 BOB WILSON DR, SAN DIEGO, CA 92134(619) 532-8488 Get Directions Write a Review

NPPES record last updated: October 3, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 20, 2022, Apr 11, 2017 (2 updates tracked since 2017).

About Dr. Mark Samuel Katsma Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK SAMUEL KATSMA DO (NPI 1326571969) is an individual pediatric orthopaedic surgery provider in San Diego, California, licensed in California (20A19988) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS and maintains a secondary practice location in San Diego.

NPPES Registry Identity

NPI1326571969
Entity TypeIndividualMale
Primary Taxonomy207XP3100X
Provider Legal NameDR. MARK SAMUEL KATSMACredential: DO
Location Address34800 BOB WILSON DRSan Diego, CA 92134-1098
Mailing Address3020 Childrens Way # Mc5003San Diego, CA 92123-4223 · (858) 309-6300
Phone(619) 532-8488
Sole ProprietorNo
Enumeration DateApril 11, 2017
Last NPPES UpdateOctober 3, 20252 updates tracked since enumeration
NPPES CertifiedOctober 3, 2025
✔ NPI 1326571969 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic Surgery · Pediatric Orthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XP3100X
License✔ Licensed in CA · 20A19988
Definition
An orthopedic surgeon who has additional training and experience in diagnosing, treating and managing musculoskeletal problems in infants, children and adolescents. These may include limb and spine deformities (such as club foot, scoliosis); gait abnormalities (limping); bone and joint infections; broken bones.
Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License 20A19988 (CA)
34800 BOB WILSON DR, San Diego, CA 92134
Open in Google Maps ↗

Secondary Practice Location 1

Location 13030 Childrens WaySan Diego, CA 92123-4232 · Phone (858) 966-6789

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark Samuel Katsma Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Mark Katsma reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Rady Children's Hospital San Diego
4.8 mi
Pediatrics
3020 CHILDRENS WAY
San Diego, CA 92123
  • Reassigned Medicare billing, California enrollment
  • 562 clinicians in this Medicare group
NPI 1669617197 (858) 966-5911

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LORENA MARIE FUJII N.P.
Nurse Practitioner (Pediatrics)
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-8910
JANELLE MARIE MARRA DO
Family Medicine
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-6400
LAKIESHA NICOLE MURPHY
Nurse's Aide
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 713-3385
SUSANNA BYRNE D.O.
Anesthesiology
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-6400
DR. PAUL CHARLES CAMPBELL D.O.
Urology (Pediatric Urology)
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-7200
PHILLIP EDWARD FRY JR. DO
Emergency Medicine
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-6400
BRADLY JAMES STILLEY IDC
Military Health Care Provider (Independent Duty Corpsman)
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (360) 941-9989
DR. ELIZABETH WHIPPLE PHD
Military Health Care Provider
34800 BOB WILSON DR
SAN DIEGO, CA 92134
San Diego County (619) 532-6400

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Katsma's NPI number?

The NPI number for Mark Katsma is 1326571969. It was assigned to this individual provider in the NPPES registry on April 11, 2017.

Where is Mark Katsma located?

Mark Katsma practices at 34800 Bob Wilson Dr, San Diego, CA 92134. The listed phone number is (619) 532-8488.

What is Mark Katsma's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Pediatric Orthopaedic Surgery, with taxonomy code 207XP3100X.

Is Mark Katsma enrolled in Medicare?

Yes. Mark Katsma is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mark Katsma's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Katsma reassigns Medicare benefits to Rady Children's Hospital San Diego (San Diego, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Katsma's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Katsma was last updated on October 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.