NPPES file of Aug 9, 2026

Stephen Zohar Sack, MD

Radiation Oncology Physician · Tulsa, OK

Stephen Zohar Sack, MD is a radiation oncology physician with a practice address in Tulsa, Oklahoma, and NPI 1548319940, issued on Jan 9, 2007. Check the license on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1548319940
Name
Stephen Zohar Sack
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
MT182252 PA
Self-reported in NPPES; status is on the state search
Practice location
11212 E 48TH St, Tulsa, OK 74146
Phone
(918) 497-3715
Enumerated
Jan 9, 2007
Record last updated
Oct 14, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(918) 884-7282
Medicare enrollment
Enrolled (PECOS I20100216000203); accepts Medicare assignment
Medical or professional school
Albert Einstein College Of Medicine Of Yeshiva University, 2002
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 11212 E 48TH St

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

  1. Matthew Armstrong, MDHematology & Oncology Physician1457363236
  2. Vicki Baker, M.D.Hematology & Oncology Physician1669414876
  3. Christy Beasley, PA CPhysician Assistant1194763607
  4. Jana Chavous, APRN-CNPAcute Care Nurse Practitioner1942729546
  5. John Eckenrode, M.D.Hematology & Oncology Physician1093782245
  6. Paul El TombHematology & Oncology Physician1871089243

Verify Stephen Zohar Sack in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and SupervisionCheck 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 Oklahoma license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.2 times the Medicare Part D claims of the average radiation oncology physician in 2024

289 Medicare Part D claims for 136 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 21 claims were for opioids.

  1. Stephen Sack289
  2. Specialty average134

Most prescribed

  1. Pentoxifylline138 claims
  2. Gabapentin22 claims
  3. Tamsulosin Hcl17 claims
  4. Dexamethasone12 claims
  5. Lorazepam11 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 93.2 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score82.4
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $191.18

5 payments; by number, the most common kind was food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stephen Sack$191.18
  2. Specialty average$1,897.85

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. Warren Clinic IncTulsa, OK

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

Stephen Zohar Sack among 56 radiation oncology physician records in Oklahoma

Stephen Zohar Sack, MD is one of 56 radiation oncology physician records with a practice address in Oklahoma. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 57% of them.

  • NPI issued2007 · 57% of these records are older, 30% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2002 · median 1998 among the 35 with a school on file
  • Record last updated2020 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in Oklahoma

There are 56 radiation oncology physician records in Oklahoma.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Jeffrey Gerstel, D.O.Tulsa, OK 741461205010600
  2. Mykhanh Nguyen, M.D.Tulsa, OK 741461508820606
  3. Anuj Peddada, M.D.Tulsa, OK 741461508846668
  4. Nathan Uy, M.D.Tulsa, OK 741461437148954
  5. William Goad, M.D.Tulsa, OK 741371104860410
  6. Oneita Taylor, MDTulsa, OK 741331679514772
  7. Robert Ellis, M.D.Tulsa, OK 741141932111739
  8. James Geurin, M.D.Tulsa, OK 741041437149457

Common questions

What is Stephen Zohar Sack, MD's NPI number?

Stephen Zohar Sack, MD's National Provider Identifier (NPI) is 1548319940, issued on Jan 9, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Stephen Zohar Sack, MD located?

The NPPES record lists a practice address at 11212 E 48TH St, Tulsa, OK, 74146. Phone: (918) 497-3715. Providers update this record themselves, so call before visiting.

How can I verify Stephen Zohar Sack, MD's license?

Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Stephen Zohar Sack, MD prescribe under Medicare Part D?

In 2024, Stephen Zohar Sack, MD had 289 Medicare Part D claims for 136 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.

What is Stephen Zohar Sack, MD's MIPS final score?

The 2023 MIPS final score is 93.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.