NPPES file of Aug 9, 2026

Mark J. Isaacson, D.O.

Orthopaedic Surgery Physician · Ankeny, IA

Mark J. Isaacson, D.O. is an orthopaedic surgery physician with a practice address in Ankeny, Iowa, and NPI 1144457474, issued on Jun 13, 2009. Check the license (Iowa 04680, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1144457474
Name
Mark J. Isaacson
Credential
D.O.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
04680 IA
Self-reported in NPPES; status is on the state search
Practice location
350 NE 36TH St, Ankeny, IA 50021
Phone
(515) 224-1414
Enumerated
Jun 13, 2009
Record last updated
Mar 5, 2026
Fax
(515) 224-5140
Medicare enrollment
Enrolled (PECOS I20150626001176); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 350 NE 36TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Grace Adsem, PA-CPhysician Assistant1487456653
  2. Jeffrey Bannister, DOOrthopaedic Surgery Physician1144671967
  3. Elizabeth Bracciano, OTOccupational Therapist1134640600
  4. Joseph Brunkhorst, D.O.Orthopaedic Surgery Physician1487849527
  5. Paul Butler, MDOrthopaedic Surgery Physician1457672719
  6. Lindsey Engbers, PA-CPhysician Assistant1124460159

Verify Mark J. Isaacson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license 04680
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Iowa license search

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93% more Medicare Part D claims than the average orthopaedic surgery physician in 2024

668 Medicare Part D claims for 329 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims. 130 claims were for opioids.

  1. Mark Isaacson668
  2. Specialty average346

Most prescribed

  1. Mupirocin248 claims
  2. Tramadol Hcl90 claims
  3. Amoxicillin53 claims
  4. Ibuprofen43 claims
  5. Pregabalin41 claims
  6. Meloxicam36 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $280.25

5 payments; by number, the most common kind was food and beverage; the largest payer was DePuy Synthes Sales Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Isaacson$280
  2. Specialty average$23,023

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Des Moines Orthopaedic Surgeons PCWest Des Moines, IA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark J. Isaacson among 257 orthopaedic surgery physician records in Iowa

Mark J. Isaacson, D.O. is one of 257 orthopaedic surgery physician records with a practice address in Iowa. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 62% of them.

  • NPI issued2009 · 62% of these records are older, 37% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2009 · median 2004 among the 151 with a school on file
  • Record last updated2026 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Iowa

There are 257 orthopaedic surgery physician records in Iowa.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Jeffrey Bannister, DOAnkeny, IA 500211144671967
  2. Joseph Brunkhorst, D.O.Ankeny, IA 500211487849527
  3. Paul Butler, MDAnkeny, IA 500211457672719
  4. Alexander Volkmar, MDAnkeny, IA 500211598228728
  5. Peter Buck, M.D.Ames, IA 500101366439796
  6. James Friederich, M.D.Ames, IA 500101295723302
  7. Thomas Greenwald, M.D.Ames, IA 500101497743314
  8. James Kohler, MDAmes, IA 500101740772417

Common questions

What is Mark J. Isaacson, D.O.'s NPI number?

Mark J. Isaacson, D.O.'s National Provider Identifier (NPI) is 1144457474, issued on Jun 13, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Mark J. Isaacson, D.O. located?

The NPPES record lists a practice address at 350 NE 36TH St, Ankeny, IA, 50021. Phone: (515) 224-1414. Providers update this record themselves, so call before visiting.

How can I verify Mark J. Isaacson, D.O.'s license?

NPPES lists Iowa license number 04680, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mark J. Isaacson, D.O. prescribe under Medicare Part D?

In 2024, Mark J. Isaacson, D.O. had 668 Medicare Part D claims for 329 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.