Hamsa N. Subramanian, M.D.
Allergy & Immunology Physician · Saint Louis, MO
Hamsa N. Subramanian, M.D. is an allergy & immunology physician with a practice address in Saint Louis, Missouri, and NPI 1154370203, issued on May 8, 2006. Check the license (Missouri 107809, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Hamsa N. Subramanian
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 107809 MO
Self-reported in NPPES; status is on the state search - Practice location
- 425 N New Ballas RD Ste 203, Saint Louis, MO 63141
- Phone
- (314) 872-3104
- Enumerated
- May 8, 2006
- Record last updated
- Mar 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (314) 994-7105
- Medicare enrollment
- Enrolled (PECOS I20050128000797); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 36 in Missouri → Look up another NPI →
Also registered at 425 N New Ballas RD Ste 203
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cherry WallaceGerontology Nurse Practitioner1013886456
Verify Hamsa N. Subramanian 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 107809Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average allergy & immunology physician in 2024
1,526 Medicare Part D claims for 301 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Montelukast Sodium267 claims
- Azelastine Hcl232 claims
- Fluticasone Propionate110 claims
- Famotidine95 claims
- Breo Ellipta72 claims
- Prednisone62 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: $316.88
13 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Signature Medical Group IncSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hamsa N. Subramanian among 36 allergy & immunology physician records in Missouri
Hamsa N. Subramanian, M.D. is one of 36 allergy & immunology physician records with a practice address in Missouri. 78% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 58% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1990 · median 2002 among the 23 with a school on file
- Record last updated2021 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Missouri
There are 36 allergy & immunology physician records in Missouri.
All 36 in Missouri → Every provider in Saint Louis → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Jeffrey Tillinghast, M.D.Saint Louis, MO 631411447393301
- Barry Zeffren, MDSaint Louis, MO 631301205908639
- Barry Cooper, MDSaint Louis, MO 631281609876366
- Elyra Figueroa, MDSaint Louis, MO 631281760686034
- Michael Borts, M.D.Saint Louis, MO 631271912991753
- Manoj Warrier, M.D.Saint Louis, MO 631271699724161
- Khaled Abdel-Hamid, MDSaint Louis, MO 631101679591572
- Ritu Gupta, M.D.St Louis, MO 631101083810808
Common questions
What is Hamsa N. Subramanian, M.D.'s NPI number?
Hamsa N. Subramanian, M.D.'s National Provider Identifier (NPI) is 1154370203, issued on May 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hamsa N. Subramanian, M.D. located?
The NPPES record lists a practice address at 425 N New Ballas RD Ste 203, Saint Louis, MO, 63141. Phone: (314) 872-3104. Providers update this record themselves, so call before visiting.
How can I verify Hamsa N. Subramanian, M.D.'s license?
NPPES lists Missouri license number 107809, 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 Hamsa N. Subramanian, M.D. prescribe under Medicare Part D?
In 2024, Hamsa N. Subramanian, M.D. had 1,526 Medicare Part D claims for 301 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.