NPPES file of Aug 9, 2026

Sylvana Atallah, M.D.

Internal Medicine Physician · South Bend, IN

Sylvana Atallah, M.D. is an internal medicine physician with a practice address in South Bend, Indiana, and NPI 1225235336, issued on Jul 2, 2007. Check the license (Indiana 01071754A, as entered in NPPES) on the Medical Licensing Board of Indiana; 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
1225235336
Name
Sylvana Atallah
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
01071754A IN
017477 ME
53077 WI
Self-reported in NPPES; status is on the state search
Practice location
328 N Michigan St Ste F3, South Bend, IN 46601
Phone
(262) 527-7410
Enumerated
Jul 2, 2007
Record last updated
Apr 18, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20130419000189); 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 Sylvana Atallah in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Licensing Board of Indiana
    Search for license 01071754A
    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 Indiana license search

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2.1 times the Medicare Part D claims of the average internal medicine physician in 2024

6,596 Medicare Part D claims for 252 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 201 claims were for opioids.

  1. Sylvana Atallah6,596
  2. Specialty average3,176

Most prescribed

  1. Amlodipine Besylate291 claims
  2. Levothyroxine Sodium271 claims
  3. Memantine Hcl249 claims
  4. Trazodone Hcl233 claims
  5. Sertraline Hcl188 claims
  6. Pantoprazole Sodium178 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.

Sylvana Atallah among 2,109 internal medicine physician records in Indiana

Sylvana Atallah, M.D. is one of 2,109 internal medicine physician records with a practice address in Indiana. 85% 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 46% of them.

  • NPI issued2007 · 46% of these records are older, 48% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1993 · median 2005 among the 1,448 with a school on file
  • Record last updated2016 · 43% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

54 internal medicine physician records list a practice address in South Bend

They are 54 of the 3,178 NPPES records with a practice address in South Bend, and 2,109 internal medicine physician records in Indiana.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Justin Chow, MDSouth Bend, IN 466011700899622
  2. Robert Einterz, MDSouth Bend, IN 466011992762652
  3. Celestina Iheanacho, MDSouth Bend, IN 466011619927530
  4. Mathew Kallookulangara, M.D.South Bend, IN 466011912998642
  5. Carolyn Klaus, M.D.South Bend, IN 466011811988561
  6. Wen Sun Lum, MDSouth Bend, IN 466011497781124
  7. Monika Niemiec, MDSouth Bend, IN 466011063610327
  8. Sunday Osunnuga, MDSouth Bend, IN 466011710937388

Common questions

What is Sylvana Atallah, M.D.'s NPI number?

Sylvana Atallah, M.D.'s National Provider Identifier (NPI) is 1225235336, issued on Jul 2, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Sylvana Atallah, M.D. located?

The NPPES record lists a practice address at 328 N Michigan St Ste F3, South Bend, IN, 46601. Phone: (262) 527-7410. Providers update this record themselves, so call before visiting.

How can I verify Sylvana Atallah, M.D.'s license?

NPPES lists Indiana license number 01071754A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Sylvana Atallah, M.D. prescribe under Medicare Part D?

In 2024, Sylvana Atallah, M.D. had 6,596 Medicare Part D claims for 252 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.