Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

HARRY SAMUEL MENCO MD
NPI 1720074099
Internal Medicine - Hematology & Oncology in Thousand Oaks, CA

Q: What is Harry Menco's NPI number?

The NPI number for Harry Menco is 1720074099. It was assigned to this individual provider in the NPPES registry on September 22, 2005.

Q: What is Harry Menco's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Harry Menco was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days 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 September 22, 2005

227 W JANSS RD, # 310, THOUSAND OAKS, CA 91360(805) 496-2949(805) 496-1844 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Harry Samuel Menco Md NPPES

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

HARRY SAMUEL MENCO MD (NPI 1720074099) is an individual hematology & oncology provider in Thousand Oaks, California, licensed in California (A41745) and active in the NPI registry since September 2005.

NPPES Registry Identity

NPI1720074099

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameHARRY SAMUEL MENCOCredential: MD

Location Address227 W JANSS RD, # 310Thousand Oaks, CA 91360-1848

Mailing Address227 W Janss Rd, # 310Thousand Oaks, CA 91360-1848 · (805) 496-2949 · Fax (805) 496-1844

Phone(805) 496-2949

Fax(805) 496-1844

Sole ProprietorNo

Enumeration DateSeptember 22, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1720074099 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in CA · A41745

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

227 W JANSS RD, Thousand Oaks, CA 91360

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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 Harry Menco's NPI number?

The NPI number for Harry Menco is 1720074099. It was assigned to this individual provider in the NPPES registry on September 22, 2005.

Where is Harry Menco located?

Harry Menco practices at 227 W Janss Rd # 310, Thousand Oaks, CA 91360. The listed phone number is (805) 496-2949.

What is Harry Menco's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

When was this NPI record last updated?

The NPPES record for Harry Menco was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days 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.