Dr. Marc A. Trzeciak, DO

  • Modesto, CA
  • Orthopedic surgeon
NPI1033111026PAC ID0042294605
Medicare services, 2024
964
Medicare patients, 2024
252
Part D claims, 2024
297
Publications
13
Hospital affiliations
1
Practice address
609 E Orangeburg Avenue, Building B, Modesto, CA 95350
Practice phone
Call (209) 527-6700
Professional email
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Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

River Surgical Institute

Surgery Center - Medicare-Certified · Modesto, California

See all 10 affiliations

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Dr. Marc A. Trzeciak is an orthopedic surgeon in Modesto, California

Dr. Trzeciak practices at River Surgical Institute in Modesto, California.

Dr. Trzeciak's NPI, 1033111026, was assigned on August 10, 2005. Dr. Trzeciak graduated from Des Moines University in 1990. Dr. Trzeciak holds California license 20A12596.

NPI and contact details
Medicare PAC ID
0042294605
NPI enumeration date
August 10, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(209) 527-6700
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
62
Medical school graduation
1990

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Marc A. Trzeciak practices at River Surgical Institute in Modesto, California

Dr. Trzeciak's primary practice is River Surgical Institute, at 609 E Orangeburg Avenue, Building B, Modesto, CA 95350. The practice phone is (209) 527-6700.

  • River Surgical Institute
    609 E Orangeburg Avenue, Building B, Modesto, CA 95350Phone(209) 527-6700

Source: Dmand AI Affiliation Data

Dr. Marc A. Trzeciak is affiliated with 6 sites of care and 4 medical groups

Dr. Trzeciak's primary practice is River Surgical Institute in Modesto, California. Dr. Trzeciak is also affiliated with Doctors Medical Center Modesto. The medical group on file is San Joaquin Faculty Medical Group. Dmand AI also links Dr. Trzeciak to 4 more group practices and clinics and 3 medical groups, each named with a free account.

See all 10 affiliations for Dr. Trzeciak

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Marc A. Trzeciak's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Trzeciak practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
River Surgical InstituteAvailable with a free account
+5 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Marc A. Trzeciak is one of 2,056 orthopedic surgeons in California

Orthopaedic surgery is Dr. Trzeciak's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Trzeciak is board certified in orthopedic surgery by the AOA Board of Orthopedic Surgery. Dmand AI has Dr. Trzeciak's licenses on file in 2 states: California and Ohio.

Specialties and state licenses

  • Orthopaedic surgery, CaliforniaPrimaryLicense 20A12596 · 2012 to 2026 · taxonomy 207X00000X
  • Orthopaedic hand surgery, OhioLicense 5505 · 1992 to 2013 · taxonomy 207XS0106X

Clinical focus

Dmand AI lists arm, wrist, hand fracture and dislocation, arthritis, carpal tunnel syndrome, hand joint or tendon inflammation, joint cyst, joint pain, minor injury to a limb and muscle pain, fibromyalgia, and limb pain among the conditions Dr. Trzeciak treats.

Orthopedic surgeons near Dr. Trzeciak

Counts of orthopedic surgeons 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

Dr. Marc A. Trzeciak billed Medicare for 964 services in 2024

CMS data shows 964 Medicare services from Dr. Trzeciak across 13 procedure codes in 2024, for 252 Medicare patients. Medicare paid $41,656 for them.

Medicare services, 2024964
Medicare patients252
Paid by Medicare$41,656
Procedure codes13

Dr. Trzeciak's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Drugs given in the office
2023: 1602024: 385141%
Office and hospital visits
2023: 3982024: 33217%
Surgery
2023: 1542024: 13910%
Imaging
2023: 1462024: 10826%

Where Dr. Trzeciak's Medicare services took place, 2024

  • In an office94398%
  • In a facility212%

Dr. Trzeciak compared with the California median for orthopedic surgeons, 2024

  • Dr. Trzeciak
  • California median
Medicare services
964vs 68341% above
Medicare patients
252vs 21517% above
Part D claims
245vs 703.5 times

Medians across 1,844 orthopedic surgeons in California with Dmand AI profiles that report each measure.

Dr. Trzeciak's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Trzeciak

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Trzeciak and other orthopedic surgeons in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Marc A. Trzeciak treated 252 Medicare patients in 2024, average age 72

CMS counts 252 Medicare patients who saw Dr. Trzeciak in 2024. The largest group is 65 to 74, with 117 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Trzeciak's median patient age at 70, with 63% women.

Medicare patients, 2024252
Average age72
Average risk score1.11
Also on Medicaid31%

Dr. Trzeciak's Medicare patients by age, 2024

Dr. Trzeciak's Medicare patients by sex, 2024

  • Women15160%
  • Men10140%

Chronic conditions among Dr. Trzeciak's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis60%
  4. Diabetes35%
  5. Chronic kidney disease22%
  6. Anxiety21%
  7. Ischemic heart disease21%
  8. Mood disorders20%

Share of Medicare patients with each condition. A patient can have several.

Dr. Trzeciak's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women63%
  • Men36%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Marc A. Trzeciak wrote 297 Medicare Part D claims in 2024

In 2024, Dr. Trzeciak wrote 297 Medicare Part D claims for 200 patients. 99% of them were for generic drugs. CMS names the drug for 245 of them, across 4 drugs with 11 or more claims each, at $1,455 in total drug cost. In 2023, CMS named 161 claims across 5 drugs.

Part D claims, 2024297
Drugs named by CMS4
Total drug cost$1,455
Part D patients200

Dr. Trzeciak's Part D claims by kind of drug, 2024

  • Generic294 claims99%
  • Brand-name and other3 claims1%

Dr. Trzeciak'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.

Drug classes CMS tracks in Dr. Trzeciak's Part D claims, 2024

  • Opioids52%153 of 297 claims
  • Antibiotics7%21 of 297 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1612024: 24552%

Drugs named by CMS: 4 in 2024, 5 in 2023.

See all prescribing by Dr. Trzeciak

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

How Dr. Marc A. Trzeciak takes part in Medicare

Dr. Trzeciak accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Marc A. Trzeciak has 13 publications on record

Dmand AI links 13 papers to Dr. Trzeciak, published from 2007 to 2023. 2017 was the busiest year, with 2. The most frequent topics are Cadaver, Postoperative Care and Radial Nerve. Dr. Trzeciak has published most often in Hand (N Y). Dr. Trzeciak's most frequent co-authors are Zachary Christopher Lum, DO, Eric Glen Huish, DO and Anthony L. Marcotte, DO.

Papers13
Years published2007 to 2023

Dr. Trzeciak's papers by year, 2007 to 2023

Topics Dr. Trzeciak writes about most

  • Cadaver
  • Postoperative Care
  • Radial Nerve
  • Radius Fractures
  • Surgical Flaps

Dr. Trzeciak's most frequent co-authors

Recent publications by Dr. Trzeciak

See all 13 publications and co-authors

See who Dr. Trzeciak researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Trzeciak works with, so you can find a warm path to the right orthopedic surgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Marc A. Trzeciak received $19,804 in industry payments from 2016 to 2025

CMS Open Payments shows 108 general payments to Dr. Trzeciak from 19 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 51% of the total. AxoGen paid the most, $6,103.

General payments to Dr. Trzeciak by program year, 2016 to 2025

General payments to Dr. Trzeciak by kind, 2016 to 2025

$19.8Kin total
  • Travel and lodging$10,15951%
  • Food and beverage$5,27027%
  • Accredited education speaker fees$2,50013%
  • Education$1,7769%
  • Gifts$990%

Companies that paid Dr. Trzeciak the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Trzeciak

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Marc A. Trzeciak has 1 award and honors on record

Dmand AI lists 1 award for Dr. Trzeciak, most recently CMS Stage 1 EHR in 2012.

Awards and honors for Dr. Trzeciak

  1. 2012
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Marc A. Trzeciak graduated from Des Moines University

Dr. Trzeciak graduated from Des Moines University in 1990. Dr. Trzeciak is a member of AOA.

  1. Medical schoolDes Moines University
  2. Board certified in orthopedic surgeryAOA Board of Orthopedic Surgery

Source: Dmand AI Professional Profile Data

Dr. Marc A. Trzeciak accepts plans from 8 insurance carriers

Dr. Trzeciak is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • CMS Medicare
  • Humana
  • Molina

Plan types Dr. Trzeciak accepts, by number of carriers

  1. Medicare7
  2. PPO5
  3. HMO3
  4. POS2
  5. EPO1

Source: Dmand AI Insurance Network Data

Sources for Dr. Marc A. Trzeciak's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Marc A. Trzeciak

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Marc A. Trzeciak's NPI number?

Dr. Marc A. Trzeciak's NPI number is 1033111026. It was assigned on August 10, 2005, and it is active in the NPI Registry.

What kind of doctor is Dr. Marc A. Trzeciak?

Dr. Marc A. Trzeciak is an orthopedic surgeon in Modesto, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).

Where does Dr. Marc A. Trzeciak practice?

Dr. Trzeciak practices at 609 E Orangeburg Avenue, Building B, Modesto, CA 95350. Dr. Trzeciak's primary practice is River Surgical Institute in Modesto, California. Dmand AI also links Dr. Trzeciak to 4 group practices and clinics and 3 medical groups.

What is Dr. Marc A. Trzeciak's office phone number?

The practice phone on file for Dr. Trzeciak is (209) 527-6700.

What is Dr. Marc A. Trzeciak's medical license number?

Dr. Trzeciak holds California license 20A12596, one of the licenses on file in 2 states.

Which states has Dr. Marc A. Trzeciak been licensed in?

Dmand AI has state licenses on file for Dr. Trzeciak in California (2012 to 2026) and Ohio (1992 to 2013).

Which hospitals is Dr. Marc A. Trzeciak affiliated with?

Dr. Trzeciak is affiliated with Doctors Medical Center Modesto.

What medical group is Dr. Marc A. Trzeciak part of?

Dr. Trzeciak is linked to San Joaquin Faculty Medical Group. Dmand AI links Dr. Trzeciak to 3 more medical groups.

Does Dr. Marc A. Trzeciak accept Medicare?

Yes. CMS data shows Dr. Trzeciak billed Medicare for 964 services in 2024, and Dr. Trzeciak accepts Medicare assignment.

How many Medicare patients does Dr. Marc A. Trzeciak see?

CMS counts 252 Medicare patients who saw Dr. Trzeciak in 2024, with an average age of 72.

Show 9 more questionsShow fewer questions

Is Dr. Marc A. Trzeciak board certified?

Yes. Dr. Trzeciak is board certified in orthopedic surgery by the AOA Board of Orthopedic Surgery.

What services does Dr. Marc A. Trzeciak bill to Medicare?

In 2024, Dr. Trzeciak's most billed Medicare services were injected or infused drug (J3301), office visit, established patient (99213) and office visit, new patient (99203).

Where did Dr. Marc A. Trzeciak go to medical school?

Dr. Trzeciak graduated from Des Moines University in 1990.

What drugs does Dr. Marc A. Trzeciak prescribe most?

In 2024 Medicare Part D data, Dr. Trzeciak's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Prednisone and Oxycodone-Acetaminophen.

Has Dr. Marc A. Trzeciak received payments from drug or device companies?

CMS Open Payments shows $19,804 in general payments to Dr. Trzeciak from 19 companies from 2016 to 2025. The largest total came from AxoGen.

How long has Dr. Marc A. Trzeciak been practicing?

Dr. Trzeciak graduated from medical school in 1990, 36 years ago.

Does Dr. Marc A. Trzeciak do research?

Dmand AI links 13 publications to Dr. Trzeciak, published from 2007 to 2023.

Who does Dr. Marc A. Trzeciak publish with?

Dr. Trzeciak's most frequent co-authors are Zachary Christopher Lum, DO (4 shared papers), Eric Glen Huish, DO (2 shared papers) and Anthony L. Marcotte, DO (2 shared papers).

What insurance does Dr. Marc A. Trzeciak accept?

Dr. Trzeciak is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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