Mathew Lonberg, MD
NPI 1235186065 · Hematology (Internal Medicine) Physician · Nyack, NY
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mathew Lonberg, MD is a Hematology (Internal Medicine) Physician provider in Nyack, NY (NPI 1235186065).
Provider details
- NPI number
- 1235186065
- Entity type
- Individual
- Primary specialty
- Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 155671 (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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,298 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 | 1,354 | $108 |
| 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 | 1,007 | $18 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 506 | $132 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 251 | $10 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 66 | $204 |
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 |
|---|---|---|
| Apixabanbrand: Eliquis | 130 | 38 |
| Anastrozole | 59 | 16 |
| Ibrutinibbrand: Imbruvica | 47 | — |
| Lenalidomidebrand: Revlimid | 44 | — |
| Pomalidomidebrand: Pomalyst | 38 | — |
| Hydroxyurea | 38 | — |
| Rivaroxabanbrand: Xarelto | 33 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,212 across 55 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
- 2006-05-27
- Last updated
- 2010-07-06
Frequently asked questions
- What is Mathew Lonberg's NPI number?
- Mathew Lonberg's National Provider Identifier (NPI) is 1235186065, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mathew Lonberg's specialty?
- Mathew Lonberg is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Mathew Lonberg located?
- Mathew Lonberg's practice location on file with NPPES is 255 Fifth Avenue, Nyack, NY 10960-1824.
- What is Mathew Lonberg's phone number?
- The practice phone number listed in the NPPES registry for Mathew Lonberg is (845) 362-1750.
- Does Mathew Lonberg accept Medicare?
- Mathew Lonberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mathew Lonberg's NPI active?
- Yes — Mathew Lonberg's NPI (1235186065) is active in the NPPES registry as of the last update on 2010-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.