2026 NPPES data Hematology (Internal Medicine) Physician NPI 1922183797 MD
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HERBERT LACHMAN, MD

Hematology (Internal Medicine) Physician in BRONX, New York. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
93
Medicare Part D claims · 15 beneficiaries · Hematology (Internal Medicine) Physician avg: 693
What the federal data reveals: HERBERT LACHMAN, MD is a Hematology (Internal Medicine) Physician ([object Object]) practicing in BRONX, New York with a Medicare Part D prescribing footprint of 93 claims across 15 beneficiaries .

What stands out: HERBERT LACHMAN, MD filed 93 Medicare Part D claims in 2023 across BRONX, New York. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

HERBERT LACHMAN, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

HERBERT LACHMAN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 10/27/2006

NPI 1922183797

Primary specialty

Hematology (Internal Medicine) Physician

Niche

1,436 US NPIs in this specialty

Medicare Part D claims

93 87% vs specialty avg

2023 prescription claims

Specialty avg: 693

Specialty distribution in New York

How Hematology (Internal Medicine) Physician compares to other specialties among New York providers

New York providers

Hematology (Internal Medicine) Physician share within New York

1. Hematology (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hematology (Internal Medicine) Physician share within New York

Specialty board-certification context

Estimated specialty board-certified rate — Hematology (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Hematology (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Hematology (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hematology (Internal Medicine) Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

HERBERT LACHMAN, MD is a Hematology (Internal Medicine) Physician provider practicing in BRONX, New York, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1922183797. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

HERBERT LACHMAN, MD appears in the CMS NPPES registry as a Hematology (Internal Medicine) Physician provider holding MD credentials at BETTY PARKER BUILDING, BRONX, NY, 10461, with a listed phone of (718) 409-9450. NPI 1922183797 was issued on 10/27/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LACHMAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 93 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $2K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Hematology (Internal Medicine) Physician is a narrow specialty nationwide, with 1,436 enrolled providers across 50 states and an average of 693 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

BETTY PARKER BUILDING
BRONX, NY 10461

Provider Details

NPI 1922183797
Specialty Hematology (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 10/27/2006

License & disciplinary context — New York NYSBPMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 — they are NOT specific to HERBERT LACHMAN, MD. To verify HERBERT LACHMAN, MD's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

93
Total Claims
$2K
Total Drug Cost
15
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
213
Total Day Supply
6,173
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
0.77

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Lisinopril
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Hematology (Internal Medicine) Physician Overview

How HERBERT LACHMAN, MD fits within the Hematology (Internal Medicine) Physician landscape nationally.

1,436
Hematology (Internal Medicine) Physician Providers in US
50
States with Hematology (Internal Medicine) Physician
693
Avg Claims per Provider

HERBERT LACHMAN, MD's 93 claims are below the specialty average of 693.

Nearby Hematology (Internal Medicine) Physician Providers in New York

Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as LACHMAN.

Compare Hematology (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is HERBERT LACHMAN, MD's specialty?
HERBERT LACHMAN, MD specializes in Hematology (Internal Medicine) Physician and practices in BRONX, New York. Credentials: MD.
How much does HERBERT LACHMAN, MD prescribe under Medicare Part D?
In 2023, HERBERT LACHMAN, MD wrote 93 Medicare Part D claims totaling $2K in drug costs for 15 beneficiaries.
Where is HERBERT LACHMAN, MD located?
HERBERT LACHMAN, MD is located at BETTY PARKER BUILDING, BRONX, NY, 10461. Phone: (718) 409-9450.
What is HERBERT LACHMAN, MD's NPI number?
HERBERT LACHMAN, MD's National Provider Identifier (NPI) is 1922183797, issued on 10/27/2006.
How many Hematology (Internal Medicine) Physician providers are there in the US?
There are 1,436 Hematology (Internal Medicine) Physician providers across 50 states in the US. The average Hematology (Internal Medicine) Physician provider writes 693 Medicare Part D claims per year.
What drugs does HERBERT LACHMAN, MD prescribe most often?
Based on 2023 Medicare Part D data, HERBERT LACHMAN, MD's most frequently prescribed drugs include Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HERBERT LACHMAN, MD accept Medicare?
HERBERT LACHMAN, MD appears in CMS Medicare data with 93 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HERBERT LACHMAN, MD's credentials?
HERBERT LACHMAN, MD's NPI is 1922183797 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology