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DR. DONALD RICHARD KNOTTS MEDICAL DOCTOR
NPI 1790858611
Internal Medicine in Castro Valley, CA

Active since November 16, 2006
20130 LAKE CHABOT RD, SUITE 309, CASTRO VALLEY, CA 94546(510) 886-3701(510) 537-3194 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Donald Richard Knotts Medical Doctor NPPES

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

DR. DONALD RICHARD KNOTTS MEDICAL DOCTOR (NPI 1790858611) is an individual internal medicine provider in Castro Valley, California, licensed in California (G33548) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1790858611
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. DONALD RICHARD KNOTTSCredential: MEDICAL DOCTOR
Location Address20130 LAKE CHABOT RD, SUITE 309Castro Valley, CA 94546-5340
Mailing Address20130 Lake Chabot Rd, Suite 309Castro Valley, CA 94546-5340 · (510) 886-3701 · Fax (510) 537-3194
Phone(510) 886-3701
Fax(510) 537-3194
Sole ProprietorYes
Enumeration DateNovember 16, 2006
Last NPPES UpdateJuly 9, 2007
✔ NPI 1790858611 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G33548
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
20130 LAKE CHABOT RD, Castro Valley, CA 94546
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Other Identifiers 3

Medicare PIN00G355480CA
Medicare UPINA46397CA
Medicaid00G355480CA

Other Providers at the Same Location NPPES 8

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

TONY HO PA-C
Physician Assistant
20130 LAKE CHABOT RD
CASTRO VALLEY, CA 94546
Alameda County (510) 889-1700
BENJAMIN WOLSZTEJN, MD INC
Obstetrics & Gynecology
20130 LAKE CHABOT RD, SUITE 306
CASTRO VALLEY, CA 94546
Alameda County (510) 581-7666
KENNETH L. ROTHMAN, M.D., INC.
Clinic/Center (Primary Care)
20130 LAKE CHABOT RD, SUITE 202
CASTRO VALLEY, CA 94546
Alameda County (510) 582-6424
MARCIA C PECK MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
20130 LAKE CHABOT RD, SUITE 201
CASTRO VALLEY, CA 94546
Alameda County (510) 204-2574
DR. LOUISE HOM M.D.
Surgery
20130 LAKE CHABOT RD, STE 202
CASTRO VALLEY, CA 94546
Alameda County (510) 583-8192
DONALD R. KNOTTS, M.D. INC
Clinic/Center (Medical Specialty)
20130 LAKE CHABOT RD, SUITE 309
CASTRO VALLEY, CA 94546
Alameda County (510) 886-3701
PATTI LACEY HEE PA-C
Physician Assistant
20130 LAKE CHABOT RD, SUITE #202
CASTRO VALLEY, CA 94546
Alameda County (510) 582-6424
ASSOCIATEDUROLOGY MEDICAL GROUP,INC.
Urology
20130 LAKE CHABOT RD, # 302
CASTRO VALLEY, CA 94546
Alameda County (510) 889-1700

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 Donald Knotts's NPI number?

The NPI number for Donald Knotts is 1790858611. It was assigned to this individual provider in the NPPES registry on November 16, 2006.

Where is Donald Knotts located?

Donald Knotts practices at 20130 Lake Chabot Rd Suite 309, Castro Valley, CA 94546. The listed phone number is (510) 886-3701.

What is Donald Knotts's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Donald Knotts was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.