Mark Kowalczyk
- Part D claims, 2024
- 49
- Hospital affiliations
- 1
- Industry payments
- $4,420
- Medical group
- 1
- State license
- 1
- Practice address
- 4910 Directors Place, Suite 100, San Diego, CA 92121
- Practice phone
- Call (858) 750-4800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgical Center of San Diego
Surgery Center - Medicare-Certified · San Diego, California
Find Mark Kowalczyk's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Mark Kowalczyk is an internist in San Diego, California
Mark Kowalczyk practices at Surgical Center of San Diego in San Diego, California.
Mark Kowalczyk's NPI, 1376106344, was assigned on April 16, 2019. Mark Kowalczyk graduated from University of Washington School of Medicine in 2019. Mark Kowalczyk holds California license A180227.
- NPI
- 1376106344NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416466743
- NPI enumeration date
- April 16, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (858) 750-4800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Kowalczyk practices at Surgical Center of San Diego in San Diego, California
Mark Kowalczyk's primary practice is Surgical Center of San Diego, at 4910 Directors Place, Suite 100, San Diego, CA 92121. The practice phone is (858) 750-4800.
- Surgical Center of San Diego4910 Directors Place, Suite 100, San Diego, CA 92121Phone(858) 750-4800
Source: Dmand AI Affiliation Data
Mark Kowalczyk is affiliated with 2 sites of care and 1 medical group
Mark Kowalczyk's primary practice is Surgical Center of San Diego in San Diego, California. Mark Kowalczyk is also affiliated with Hillcrest Medical Center. The medical group on file is UC San Diego Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark Kowalczyk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Kowalczyk practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgical Center of San Diego | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Kowalczyk is one of 16,751 internists in California
Internal medicine is Mark Kowalczyk's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Mark Kowalczyk is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Mark Kowalczyk
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Mark Kowalczyk's patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Mark Kowalczyk's median patient age at 55, with 55% women.
Mark Kowalczyk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women55%
- Men44%
Source: Dmand AI Patient Panel Data
Mark Kowalczyk wrote 49 Medicare Part D claims in 2024
In 2024, Mark Kowalczyk wrote 49 Medicare Part D claims for 19 patients. 67% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $10,237 in total drug cost.
Mark Kowalczyk's Part D claims by kind of drug, 2024
- Generic33 claims67%
- Brand-name16 claims33%
Mark Kowalczyk's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mark Kowalczyk ranks in the 85th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Mark Kowalczyk accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Mark Kowalczyk as offering telehealth. CMS counts 150 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Mark Kowalczyk, more than 85% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Mark Kowalczyk ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 85th percentile150 procedures
- Colonoscopy
- 76th percentile84 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Mark Kowalczyk received $4,420 in industry payments from 2024 to 2025
CMS Open Payments shows 40 general payments to Mark Kowalczyk from 5 drug and device companies from 2024 to 2025. Travel and lodging make up the largest share, 72% of the total. Olympus Corporation of the Americas paid the most, $3,248.
General payments to Mark Kowalczyk by program year, 2024 to 2025
General payments to Mark Kowalczyk by kind, 2024 to 2025
- Travel and lodging$3,17972%
- Food and beverage$1,24128%
Companies that paid Mark Kowalczyk the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mark Kowalczyk graduated from University of Washington School of Medicine
Mark Kowalczyk graduated from University of Washington School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Mark Kowalczyk's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Mark Kowalczyk
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Kowalczyk's NPI number?
Mark Kowalczyk's NPI number is 1376106344. It was assigned on April 16, 2019, and it is active in the NPI Registry.
What does Mark Kowalczyk specialize in?
Mark Kowalczyk is an internist in San Diego, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Mark Kowalczyk practice?
Mark Kowalczyk practices at 4910 Directors Place, Suite 100, San Diego, CA 92121. Mark Kowalczyk's primary practice is Surgical Center of San Diego in San Diego, California.
What is Mark Kowalczyk's office phone number?
The practice phone on file for Mark Kowalczyk is (858) 750-4800.
What is Mark Kowalczyk's medical license number?
Mark Kowalczyk holds California license A180227, one of 2 state licenses on file.
Which hospitals is Mark Kowalczyk affiliated with?
Mark Kowalczyk is affiliated with Hillcrest Medical Center.
What medical group is Mark Kowalczyk part of?
Mark Kowalczyk is linked to UC San Diego Health.
Does Mark Kowalczyk accept Medicare?
Yes. CMS lists Mark Kowalczyk as accepting Medicare assignment.
Does Mark Kowalczyk offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Mark Kowalczyk as offering telehealth services.
Where did Mark Kowalczyk go to medical school?
Mark Kowalczyk graduated from University of Washington School of Medicine in 2019.
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What drugs does Mark Kowalczyk prescribe most?
In 2024 Medicare Part D data, Mark Kowalczyk's most prescribed drugs by claims were Linzess.
Has Mark Kowalczyk received payments from drug or device companies?
CMS Open Payments shows $4,420 in general payments to Mark Kowalczyk from 5 companies from 2024 to 2025. The largest total came from Olympus Corporation of the Americas.
How long has Mark Kowalczyk been practicing?
Mark Kowalczyk graduated from medical school in 2019, 7 years ago.
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