Karissa Weidman, M.D.
NPI 1598113078 · Internal Medicine Physician · Stony Brook, NY
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karissa Weidman, M.D. is a Internal Medicine Physician provider in Stony Brook, NY (NPI 1598113078).
Provider details
- NPI number
- 1598113078
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 267452 (MA)
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
10 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
550 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 79 | $137 |
| Test to Determine Lung Volumes Using Gas Dilution Or Washout94727 | 74 | $53 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 74 | $68 |
| Critical Care, First 30-74 Minutes99291 | 69 | $246 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 44 | $211 |
| Test to Measure Expiratory Airflow and Volume94010 | 42 | $33 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 27 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 24 |
| Umeclidinium Bromidebrand: Incruse Ellipta | 14 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 11 |
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.
$88 across 3 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)
- 800 Washington StBoston, MA 02111-1552Phone: (617) 636-5000
- 525 E 68th StNew York, NY 10065-4870Phone: (646) 962-2333
Registry dates
- Enumerated
- 2016-05-25
- Last updated
- 2025-09-11
- Certified
- 2022-06-02
Frequently asked questions
- What is Karissa Weidman's NPI number?
- Karissa Weidman's National Provider Identifier (NPI) is 1598113078, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karissa Weidman's specialty?
- Karissa Weidman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karissa Weidman located?
- Karissa Weidman's practice location on file with NPPES is 101 Nicolls Rd Ofc T17-040, Stony Brook, NY 11794-0001.
- What is Karissa Weidman's phone number?
- The practice phone number listed in the NPPES registry for Karissa Weidman is (631) 444-3869.
- Does Karissa Weidman accept Medicare?
- Karissa Weidman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karissa Weidman's NPI active?
- Yes — Karissa Weidman's NPI (1598113078) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.