Hassan Tahsildar, M.D.
NPI 1629067269 · Medical Oncology Physician · Green Bay, WI
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hassan Tahsildar, M.D. is a Medical Oncology Physician provider in Green Bay, WI (NPI 1629067269).
Provider details
- NPI number
- 1629067269
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 54846-020 (WI)
Specialties & taxonomies
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
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
310 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 | 213 | $90 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 44 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 32 | $134 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 21 | $167 |
Typical Medicare-allowed amounts for these services range $15–$167 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 149 | 42 |
| Ibrutinibbrand: Imbruvica | 119 | 13 |
| Acyclovir | 76 | 22 |
| Ondansetron Hcl | 61 | 48 |
| Prochlorperazine Maleate | 47 | 38 |
| Lenalidomide | 43 | — |
| Zolpidem Tartrate | 39 | 11 |
| Dexamethasone | 30 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (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 (3)
- 744 S Webster AveGreen Bay, WI 54301-3505Phone: (920) 433-3500Fax: (920) 445-7301
- 2820 Roosevelt RdMarinette, WI 54143-3834Phone: (715) 735-5225Fax: (715) 735-5388
- 820 Arbutus AveOconto, WI 54153-2004Phone: (920) 835-1100Fax: (920) 835-1099
Registry dates
- Enumerated
- 2005-10-17
- Last updated
- 2021-01-14
- Certified
- 2021-01-14
Frequently asked questions
- What is Hassan Tahsildar's NPI number?
- Hassan Tahsildar's National Provider Identifier (NPI) is 1629067269, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hassan Tahsildar's specialty?
- Hassan Tahsildar is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Hassan Tahsildar located?
- Hassan Tahsildar's practice location on file with NPPES is 1580 Commanche Ave, Green Bay, WI 54313-5751.
- What is Hassan Tahsildar's phone number?
- The practice phone number listed in the NPPES registry for Hassan Tahsildar is (920) 435-8326.
- Does Hassan Tahsildar accept Medicare?
- Hassan Tahsildar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hassan Tahsildar's NPI active?
- Yes — Hassan Tahsildar's NPI (1629067269) is active in the NPPES registry as of the last update on 2021-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.