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

ERRISHA M RICHARDSON MD
NPI 1982266649
Internal Medicine in Antioch, CA

Active since July 02, 2019PECOS Enrolled
4457 ROCK ISLAND DR, ANTIOCH, CA 94509(573) 882-4438 Get Directions Write a Review

NPPES record last updated: June 29, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 6, 2025, Jul 2, 2019 (2 updates tracked since 2019).

About Errisha M Richardson Md NPPES

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

ERRISHA M RICHARDSON MD (NPI 1982266649) is an individual internal medicine provider in Antioch, California, licensed in Missouri (2019023757) and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1982266649
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameERRISHA M RICHARDSONCredential: MD
Location Address4457 ROCK ISLAND DRAntioch, CA 94509-7780
Mailing Address4457 Rock Island DrAntioch, CA 94509-7780
Phone(573) 882-4438
Sole ProprietorYes
Enumeration DateJuly 2, 2019
Last NPPES UpdateJune 29, 20262 updates tracked since enumeration
NPPES CertifiedJune 29, 2026
✔ NPI 1982266649 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MO · 2019023757
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.
Also ListedPediatricsTaxonomy 208000000X · License 2019023757 (MO)
4457 ROCK ISLAND DR, Antioch, CA 94509
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Errisha M Richardson 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 94509 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
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 2

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

MRS. BRENDA RICHARDSON NP
Nurse Practitioner (Family)
4457 ROCK ISLAND DR
ANTIOCH, CA 94509
Contra Costa County (510) 379-9799
FIERA FOREMAN NP
Nurse Practitioner (Psychiatric/Mental Health)
4457 ROCK ISLAND DR
ANTIOCH, CA 94509
Contra Costa County (510) 333-3263

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 Errisha Richardson's NPI number?

The NPI number for Errisha Richardson is 1982266649. It was assigned to this individual provider in the NPPES registry on July 2, 2019.

Where is Errisha Richardson located?

Errisha Richardson practices at 4457 Rock Island Dr, Antioch, CA 94509. The listed phone number is (573) 882-4438.

What is Errisha Richardson's specialty?

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

Is Errisha Richardson enrolled in Medicare?

Yes. Errisha Richardson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Errisha Richardson was last updated on June 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 56 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.