Sherman Klein, M.D.
NPI 1558340992 · Internal Medicine Physician · Flushing, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sherman Klein, M.D. is a Internal Medicine Physician provider in Flushing, NY (NPI 1558340992).
Provider details
- NPI number
- 1558340992
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 162551 (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
240 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 | 83 | $102 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $72 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 43 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 21 | $144 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 18 | $106 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 91 | 32 |
| Metoprolol Succinate | 84 | 30 |
| Metformin Hcl | 81 | 27 |
| Atorvastatin Calcium | 78 | 33 |
| Losartan Potassium | 70 | 24 |
| Allopurinol | 62 | 21 |
| Hydrochlorothiazide | 61 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$368 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
Registry dates
- Enumerated
- 2006-01-13
- Last updated
- 2008-11-26
Frequently asked questions
- What is Sherman Klein's NPI number?
- Sherman Klein's National Provider Identifier (NPI) is 1558340992, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sherman Klein's specialty?
- Sherman Klein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sherman Klein located?
- Sherman Klein's practice location on file with NPPES is 14601 45th Ave, Flushing, NY 11355-2200.
- What is Sherman Klein's phone number?
- The practice phone number listed in the NPPES registry for Sherman Klein is (718) 353-1010.
- Does Sherman Klein accept Medicare?
- Sherman Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sherman Klein's NPI active?
- Yes — Sherman Klein's NPI (1558340992) is active in the NPPES registry as of the last update on 2008-11-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.