RICHARD LESSMAN, M.D., INC.
NPI 1619368081
Internal Medicine - Nephrology in Thousand Oaks, CA

Q: What is Richard Lessman, M.D., Inc.'s NPI number?

The NPI number for Richard Lessman, M.D., Inc. is 1619368081. It was assigned to this organization in the NPPES registry on February 6, 2015.

Q: What is Richard Lessman, M.D., Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Active since February 06, 2015

227 W JANSS RD, THOUSAND OAKS, CA 91360(805) 496-6051(805) 496-6785 Get Directions Write a Review

NPPES record last updated: February 6, 2015. Verified against the NPPES registry weekly; last sync: September 06, 2026.

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About Richard Lessman, M.d., Inc. NPPES

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

RICHARD LESSMAN, M.D., INC. (NPI 1619368081) is a healthcare organization registered as a nephrology in Thousand Oaks, California and active in the NPI registry since February 2015. The organization lists Charlotte Jiwanmall, Manager, as its authorized official.

NPPES Registry Identity

NPI1619368081

Entity TypeOrganization

Primary Taxonomy207RN0300X

Legal Business NameRICHARD LESSMAN, M.D., INC.

Location Address227 W JANSS RDThousand Oaks, CA 91360-1848

Mailing Address227 W Janss RdThousand Oaks, CA 91360-1848 · (805) 496-6051 · Fax (805) 496-6785

Phone(805) 496-6051

Fax(805) 496-6785

Organization SubpartNo

Authorized OfficialCharlotte JiwanmallManager · (805) 496-6051

Enumeration DateFebruary 6, 2015

✔ NPI 1619368081 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in CA · A23840

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

227 W JANSS RD, Thousand Oaks, CA 91360

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Other Identifiers 3

Medicaid00A23840CA

Medicare UPINA23717CA

Medicare PINWA23840BCA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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.

KELSEY LINDSEY NP

Family Medicine

227 W JANSS RD
THOUSAND OAKS, CA 91360

Ventura County (805) 795-7296

PAUL L. DUDLEY M.D.

Psychiatry & Neurology (Neurology)

227 W JANSS RD, #135
THOUSAND OAKS, CA 91360

Ventura County (805) 373-2890

DR. RICHARD LESSMAN M.D.

Internal Medicine (Nephrology)

227 W JANSS RD, SUITE 110
THOUSAND OAKS, CA 91360

Ventura County (805) 496-6051

CALIFORNIA KIDNEY MEDICAL GROUP INC

Internal Medicine (Nephrology)

227 W JANSS RD, SUITE 110
THOUSAND OAKS, CA 91360

Ventura County (805) 496-6051

JASON CHEN-SHAN LEE M.D.

Radiology (Diagnostic Radiology)

227 W JANSS RD, #150
THOUSAND OAKS, CA 91360

Ventura County (805) 496-7755

DR. MARK E. MERRIMAN M.D.

Anesthesiology

227 W JANSS RD, STE 240
THOUSAND OAKS, CA 91360

Ventura County (805) 371-0455

DR. FRANCOISE GIAO PHUONG MENTEER MD

Internal Medicine

227 W JANSS RD, SUITE 305
THOUSAND OAKS, CA 91360

Ventura County (805) 449-4181

DR. HARRY J COZEN M.D.

Anesthesiology

227 W JANSS RD
THOUSAND OAKS, CA 91360

Ventura County (805) 371-0455

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Richard Lessman, M.D., Inc.'s NPI number?

The NPI number for Richard Lessman, M.D., Inc. is 1619368081. It was assigned to this organization in the NPPES registry on February 6, 2015.

Where is Richard Lessman, M.D., Inc. located?

Richard Lessman, M.D., Inc. is located at 227 W Janss Rd, Thousand Oaks, CA 91360. The listed phone number is (805) 496-6051.

What is Richard Lessman, M.D., Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

When was this NPI record last updated?

The NPPES record for Richard Lessman, M.D., Inc. was last updated on February 6, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.