Rachana Oak, D.O.
NPI 1265842868 · Gastroenterology Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachana Oak, D.O. is a Gastroenterology Physician provider in Brooklyn, NY (NPI 1265842868).
Provider details
- NPI number
- 1265842868
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
526 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 271 | $106 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 93 | $130 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 61 | $129 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 57 | $122 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 44 | $292 |
Typical Medicare-allowed amounts for these services range $106–$292 (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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 335 | 107 |
| Famotidine | 242 | 89 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 93 | 86 |
| Omeprazole | 85 | 30 |
| Linaclotidebrand: Linzess | 68 | 27 |
| Sod Picosulf/Mag Ox/Citric Acbrand: Clenpiq | 36 | 35 |
| Rabeprazole Sodium | 31 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,142 across 68 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
- 2014-05-05
- Last updated
- 2023-10-05
- Certified
- 2023-10-05
Frequently asked questions
- What is Rachana Oak's NPI number?
- Rachana Oak's National Provider Identifier (NPI) is 1265842868, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachana Oak's specialty?
- Rachana Oak is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Rachana Oak located?
- Rachana Oak's practice location on file with NPPES is 2601 Ocean Pkwy, Brooklyn, NY 11235-7745.
- What is Rachana Oak's phone number?
- The practice phone number listed in the NPPES registry for Rachana Oak is (718) 616-3000.
- Does Rachana Oak accept Medicare?
- Rachana Oak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachana Oak's NPI active?
- Yes — Rachana Oak's NPI (1265842868) is active in the NPPES registry as of the last update on 2023-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.