Karen Laura Hammerman, MD
Dermatology Physician · Brooklyn, NY
Karen Laura Hammerman, MD is a dermatology physician with a practice address in Brooklyn, New York, and NPI 1083934087, issued on Jun 2, 2010. Check the license (New York 263285, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Karen Laura Hammerman
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 263285 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2408 Ocean Ave, Brooklyn, NY 11229
- Phone
- (718) 332-2999
- Enumerated
- Jun 2, 2010
- Record last updated
- Mar 4, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20131025000589); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2007
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 1,211 in New York → Look up another NPI →
Verify Karen Laura Hammerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 263285Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average dermatology physician in 2024
760 Medicare Part D claims for 290 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Mupirocin148 claims
- Ketoconazole100 claims
- Triamcinolone Acetonide82 claims
- Fluocinonide61 claims
- Metronidazole36 claims
- Nystatin29 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,244.42
59 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Schweiger Dermatology PLLCGarden City, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Laura Hammerman among 1,211 dermatology physician records in New York
Karen Laura Hammerman, MD is one of 1,211 dermatology physician records with a practice address in New York. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 35% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2007 · median 2004 among the 880 with a school on file
- Record last updated2015 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in New York
There are 1,211 dermatology physician records in New York.
All 1,211 in New York → Every provider in Brooklyn → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Lina Plantilla, MD, FAADBrooklyn, NY 112291306845599
- Benjamin Reinhardt, M.D.Brooklyn, NY 112291891141883
- Michael Shapiro, MDBrooklyn, NY 112291740381516
- Yelena Vevitsis, R-PACBrooklyn, NY 112291013248103
- Marina Zabezhanskaya, M.D.Brooklyn, NY 112291134226665
- Steven Baranowitz, MDBrooklyn, NY 112301700089851
- Susan Bard, M.D.Brooklyn, NY 112301134387657
- Amy Batterman, MDBrooklyn, NY 112301710033113
Common questions
What is Karen Laura Hammerman, MD's NPI number?
Karen Laura Hammerman, MD's National Provider Identifier (NPI) is 1083934087, issued on Jun 2, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Karen Laura Hammerman, MD located?
The NPPES record lists a practice address at 2408 Ocean Ave, Brooklyn, NY, 11229. Phone: (718) 332-2999. Providers update this record themselves, so call before visiting.
How can I verify Karen Laura Hammerman, MD's license?
NPPES lists New York license number 263285, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Laura Hammerman, MD prescribe under Medicare Part D?
In 2024, Karen Laura Hammerman, MD had 760 Medicare Part D claims for 290 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Karen Laura Hammerman, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.