DR. LOUIS NATHANIEL LACHMAN MD
NPI 1255795274
Psychiatry & Neurology - Psychiatry in Bethesda, MD

Q: What is Louis Lachman's NPI number?

The NPI number for Louis Lachman is 1255795274. It was assigned to this individual provider in the NPPES registry on April 6, 2016.

Q: What is Louis Lachman's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Louis Lachman was last updated on February 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 06, 2016PECOS Enrolled

8901 ROCKVILLE PIKE, BETHESDA, MD 20889(240) 857-7186 Get Directions Write a Review

NPPES record last updated: February 9, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 11, 2022, Mar 25, 2021, May 23, 2018 (3 updates tracked since 2018).

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About Dr. Louis Nathaniel Lachman Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LOUIS NATHANIEL LACHMAN MD (NPI 1255795274) is an individual psychiatry provider in Bethesda, Maryland, licensed in Virginia (0101264673) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS and maintains a secondary practice location in Bethesda.

NPPES Registry Identity

NPI1255795274

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. LOUIS NATHANIEL LACHMANCredential: MD

Location Address8901 ROCKVILLE PIKEBethesda, MD 20889-0001

Mailing Address4301 Jones Bridge RdBethesda, MD 20814-4799

Phone(240) 857-7186

Sole ProprietorYes

Enumeration DateApril 6, 2016

Last NPPES UpdateFebruary 9, 20263 updates tracked since enumeration

NPPES CertifiedFebruary 9, 2026

✔ NPI 1255795274 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in VA · 0101264673

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Also ListedGeneral PracticeTaxonomy 208D00000X · License 0101264673 (VA)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

8901 ROCKVILLE PIKE, Bethesda, MD 20889

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Secondary Practice Location 1

Location 14301 Jones Bridge RdBethesda, MD 20814-4799 · Phone (301) 295-9796

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Louis Nathaniel Lachman Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20889 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$194.86 typical visit price

range $65.18 – $194.86

Typical copayment $48.71 (range $16.29 – $48.71)

Most-billed visit code 99205

Established Patient

$80.66 typical visit price

range $21.40 – $158.88

Typical copayment $20.16 (range $5.35 – $39.72)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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