Amy Tiersten, M.D.
NPI 1558362566 · Medical Oncology Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Tiersten, M.D. is a Medical Oncology Physician provider in New York, NY (NPI 1558362566).
Provider details
- NPI number
- 1558362566
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 186341 (NY)
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,007 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 | 676 | $72 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 237 | $105 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 58 | $129 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 36 | $199 |
Typical Medicare-allowed amounts for these services range $72–$199 (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 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 493 | 167 |
| Exemestane | 128 | 43 |
| Tamoxifen Citrate | 72 | 31 |
| Letrozole | 46 | 16 |
| Ondansetron Hcl | 25 | 12 |
| Trazodone Hcl | 24 | — |
| Prochlorperazine Maleate | 17 | — |
| Dexamethasone | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,372 across 13 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 (2)
- One Gustave L. Levy Place, Box 1079New York, NY 10029Phone: (212) 241-2298Fax: (212) 876-5276
- One Gustave L. Levy Place, Box 1079New York, NY 10029Phone: (212) 241-2298Fax: (212) 876-5276
Registry dates
- Enumerated
- 2005-08-02
- Last updated
- 2019-02-26
Frequently asked questions
- What is Amy Tiersten's NPI number?
- Amy Tiersten's National Provider Identifier (NPI) is 1558362566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Tiersten's specialty?
- Amy Tiersten is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Amy Tiersten located?
- Amy Tiersten's practice location on file with NPPES is 1176 5th Ave, New York, NY 10029.
- What is Amy Tiersten's phone number?
- The practice phone number listed in the NPPES registry for Amy Tiersten is (212) 241-3300.
- Does Amy Tiersten accept Medicare?
- Amy Tiersten is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Tiersten's NPI active?
- Yes — Amy Tiersten's NPI (1558362566) is active in the NPPES registry as of the last update on 2019-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.