Divya Mallam, MD
NPI 1437437613 · Gastroenterology Physician · New York, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Divya Mallam, MD is a Gastroenterology Physician provider in New York, NY (NPI 1437437613).
Provider details
- NPI number
- 1437437613
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A123488 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
77 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 | 27 | $136 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 14 | $189 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 13 | $179 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 12 | $98 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 11 | $171 |
Typical Medicare-allowed amounts for these services range $98–$189 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 128 | 55 |
| Pantoprazole Sodium | 66 | 25 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 48 | 46 |
| Linaclotidebrand: Linzess | 41 | 15 |
| Famotidine | 37 | 14 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 34 | 32 |
| Sucralfate | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,395 across 60 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
Registry dates
- Enumerated
- 2011-07-22
- Last updated
- 2026-03-19
- Certified
- 2026-03-19
Frequently asked questions
- What is Divya Mallam's NPI number?
- Divya Mallam's National Provider Identifier (NPI) is 1437437613, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Divya Mallam's specialty?
- Divya Mallam is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Divya Mallam located?
- Divya Mallam's practice location on file with NPPES is 80 Maiden Ln Rm 1204, New York, NY 10038-4721.
- What is Divya Mallam's phone number?
- The practice phone number listed in the NPPES registry for Divya Mallam is (212) 427-8761.
- Does Divya Mallam accept Medicare?
- Divya Mallam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Divya Mallam's NPI active?
- Yes — Divya Mallam's NPI (1437437613) is active in the NPPES registry as of the last update on 2026-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.