Nadia Zia, MD
Internal Medicine Physician · O Fallon, MO
Nadia Zia, MD is an internal medicine physician with a practice address in O Fallon, Missouri, and NPI 1134164825, issued on Jun 18, 2006. Check the license (Missouri 2004023371, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Nadia Zia
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2004023371 MO
Self-reported in NPPES; status is on the state search - Practice location
- 2 Progress Point CT, O Fallon, MO 63368
- Phone
- (314) 317-0600
- Enumerated
- Jun 18, 2006
- Record last updated
- Jun 19, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (314) 317-0606
- Medicaid IDs
- 1134164825 MO
1134164825 IL - Medicare enrollment
- Enrolled (PECOS I20050314000026); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 2 Progress Point CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrea Atkins, CRNACertified Registered Nurse Anesthetist1306140579
- Sunita Dharmavarapu, MDAnesthesiology Physician1063542793
- Steven Feit, MDAnesthesiology Physician1952342206
- David Friedman, MDAnesthesiology Physician1083693501
- Kris Gallina, CRNACertified Registered Nurse Anesthetist1023258332
- Sandra Habermaas-Herold, CRNACertified Registered Nurse Anesthetist1487840450
Verify Nadia Zia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2004023371Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
21 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Bills Medicare through one group practice
- Southeastern Physician Services PCO Fallon, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nadia Zia among 2,604 internal medicine physician records in Missouri
Nadia Zia, MD is one of 2,604 internal medicine physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1996 · median 2006 among the 1,443 with a school on file
- Record last updated2014 · 48% 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 Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 internal medicine physician records list a practice address in O Fallon
They are 17 of the 1,225 NPPES records with a practice address in O Fallon, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in O Fallon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Daniela Blum Morales, MDO Fallon, MO 633681730561069
- Gregory Genova, M.D.O Fallon, MO 633681750377941
- Naman Ghazal-Albar, MDO Fallon, MO 633681639144785
- Gary Gray, MDO Fallon, MO 633681497729826
- Brian Grus, MDO Fallon, MO 633681053421065
- Geraldine Ryan, M.D.O Fallon, MO 633681689640609
- Rajiv Sadana, MDO Fallon, MO 633681669423034
- Aaron Steimel, DOO Fallon, MO 633681659067874
Common questions
What is Nadia Zia, MD's NPI number?
Nadia Zia, MD's National Provider Identifier (NPI) is 1134164825, issued on Jun 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nadia Zia, MD located?
The NPPES record lists a practice address at 2 Progress Point CT, O Fallon, MO, 63368. Phone: (314) 317-0600. Providers update this record themselves, so call before visiting.
How can I verify Nadia Zia, MD's license?
NPPES lists Missouri license number 2004023371, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nadia Zia, MD prescribe under Medicare Part D?
In 2024, Nadia Zia, MD had 21 Medicare Part D claims; 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.