Mihir Majmundar, M.D.
NPI 1417932955 · Specialist · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mihir Majmundar, M.D. is a Specialist provider in Oak Lawn, IL (NPI 1417932955).
Provider details
- NPI number
- 1417932955
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 75757 (AZ)
Specialties & taxonomies
Other Service Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
194 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $132 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 34 | $159 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 28 | $136 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 25 | $174 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 23 | $107 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 54 | 49 |
| Amoxicillin | 48 | 46 |
| Clarithromycin | 40 | 40 |
| Metronidazole | 25 | 23 |
| Lansoprazole | 22 | 21 |
| Doxycycline Hyclate | 17 | 17 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$471 across 12 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1390 W 16th StYuma, AZ 85364-4430Phone: (928) 344-4325
Registry dates
- Enumerated
- 2005-12-07
- Last updated
- 2025-04-02
- Certified
- 2025-04-02
Frequently asked questions
- What is Mihir Majmundar's NPI number?
- Mihir Majmundar's National Provider Identifier (NPI) is 1417932955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mihir Majmundar's specialty?
- Mihir Majmundar is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Mihir Majmundar located?
- Mihir Majmundar's practice location on file with NPPES is 9921 Southwest Hwy, Oak Lawn, IL 60453-3767.
- What is Mihir Majmundar's phone number?
- The practice phone number listed in the NPPES registry for Mihir Majmundar is (708) 499-5678.
- Does Mihir Majmundar accept Medicare?
- Mihir Majmundar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mihir Majmundar's NPI active?
- Yes — Mihir Majmundar's NPI (1417932955) is active in the NPPES registry as of the last update on 2025-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.