NPPES file of Aug 9, 2026

Natalia Dorf Biderman, MD

Internal Medicine Physician · St Louis Park, MN

Natalia Dorf Biderman, MD is an internal medicine physician with a practice address in St Louis Park, Minnesota, and NPI 1548453947, issued on Aug 20, 2007. Check the license (Minnesota 52577, as entered in NPPES) on the Minnesota Board of Medical Practice; 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
1548453947
Name
Natalia Dorf Biderman
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
52577 MN
Self-reported in NPPES; status is on the state search
Practice location
6500 Excelsior Blvd Ste #2-260, St Louis Park, MN 55426
Phone
(952) 993-6495
Enumerated
Aug 20, 2007
Record last updated
Feb 4, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(952) 993-6609
Medicare enrollment
Enrolled (PECOS I20110722000493); 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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Verify Natalia Dorf Biderman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 52577
    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 Minnesota license search

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96% fewer Medicare Part D claims than the average internal medicine physician in 2024

119 Medicare Part D claims for 47 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Natalia Dorf Biderman119
  2. Specialty average3,176

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.

Bills Medicare through one group practice

  1. Park Nicollet ClinicBloomington, MN

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

Natalia Dorf Biderman among 2,632 internal medicine physician records in Minnesota

Natalia Dorf Biderman, MD is one of 2,632 internal medicine physician records with a practice address in Minnesota. 75% 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 42% of them.

  • NPI issued2007 · 42% of these records are older, 52% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2002 · median 2008 among the 1,700 with a school on file
  • Record last updated2014 · 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 207R00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

77 internal medicine physician records list a practice address in St Louis Park

They are 77 of the 3,089 NPPES records with a practice address in St Louis Park, and 2,632 internal medicine physician records in Minnesota.

The 8 internal medicine physician records with the nearest ZIP codes

  1. David Abelson, MDSt Louis Park, MN 554261124002514
  2. Roderick Adams, MDSt Louis Park, MN 554261659345619
  3. Tommy Cho, MDSt Louis Park, MN 554261457326043
  4. Joseph Frisch, MDSt Louis Park, MN 554261992758338
  5. Peter Gjevre, MDSt Louis Park, MN 554261790750370
  6. Janet Grayson, MDSt Louis Park, MN 554261003892456
  7. Bethany Grommesh, MDSt Louis Park, MN 554261225090905
  8. Joanna Kokoszka, M.D.St Louis Park, MN 554261851376495

Common questions

What is Natalia Dorf Biderman, MD's NPI number?

Natalia Dorf Biderman, MD's National Provider Identifier (NPI) is 1548453947, issued on Aug 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Natalia Dorf Biderman, MD located?

The NPPES record lists a practice address at 6500 Excelsior Blvd Ste #2-260, St Louis Park, MN, 55426. Phone: (952) 993-6495. Providers update this record themselves, so call before visiting.

How can I verify Natalia Dorf Biderman, MD's license?

NPPES lists Minnesota license number 52577, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Natalia Dorf Biderman, MD prescribe under Medicare Part D?

In 2024, Natalia Dorf Biderman, MD had 119 Medicare Part D claims for 47 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.