ROY HARPER JACKSON M D INC
NPI 1659452092
Internal Medicine in Pasadena, CA

Q: What is Roy Harper Jackson M D Inc's NPI number?

The NPI number for Roy Harper Jackson M D Inc is 1659452092. It was assigned to this organization in the NPPES registry on October 18, 2006. The provider is doing business as Health Care Institute Medical Group.

Q: What is Roy Harper Jackson M D Inc's specialty?

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

Active since October 18, 2006

65 N MADISON AVE STE 709, PASADENA, CA 91101(626) 792-4185(626) 792-7358 Get Directions Write a Review

NPPES record last updated: November 24, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 24, 2025, Apr 21, 2021 (2 updates tracked since 2021).

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About Roy Harper Jackson M D Inc NPPES

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

ROY HARPER JACKSON M D INC (NPI 1659452092), doing business as Health Care Institute Medical Group, is a healthcare organization registered as an internal medicine in Pasadena, California and active in the NPI registry since October 2006. The organization lists Roy Harper Jackson, President Ceo, as its authorized official.

NPPES Registry Identity

NPI1659452092

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameROY HARPER JACKSON M D INC

Location Address65 N MADISON AVE STE 709Pasadena, CA 91101-2046

Mailing Address65 N Madison Ave Ste 709Pasadena, CA 91101-2046 · (626) 792-4185 · Fax (626) 792-7358

Phone(626) 792-4185

Fax(626) 792-7358

Organization SubpartNo

Authorized OfficialRoy Harper JacksonPresident Ceo · (626) 792-4185

Enumeration DateOctober 18, 2006

Last NPPES UpdateNovember 24, 20252 updates tracked since enumeration

NPPES CertifiedNovember 24, 2025

✔ NPI 1659452092 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 · G30184

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.

65 N MADISON AVE STE 709, Pasadena, CA 91101

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Other Names 1

Doing Business AsHealth Care Institute Medical Group

Other Identifiers 1

MedicaidGR0066950CA

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

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Roy Harper Jackson M D Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Roy Harper Jackson M D Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Roy Jackson, M.D.

Internal Medicine

NPI 1669424982

65 N MADISON AVE STE 709
Pasadena, CA 91101

(626) 792-4185

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Roy Harper Jackson M D Inc's NPI number?

The NPI number for Roy Harper Jackson M D Inc is 1659452092. It was assigned to this organization in the NPPES registry on October 18, 2006. The provider is doing business as Health Care Institute Medical Group.

Where is Roy Harper Jackson M D Inc located?

Roy Harper Jackson M D Inc is located at 65 N Madison Ave Ste 709, Pasadena, CA 91101. The listed phone number is (626) 792-4185.

What is Roy Harper Jackson M D Inc's specialty?

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

Is Roy Harper Jackson M D Inc enrolled in Medicare?

Yes. Roy Harper Jackson M D Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Roy Harper Jackson M D Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Roy Harper Jackson M D Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Roy Harper Jackson M D Inc was last updated on November 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.