UNITED MEDICAL DOCTORS – NPI #1639023187
Internal Medicine

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

Health Care Provider Taxonomy Code for Internal Medicine

UNITED MEDICAL DOCTORS is a provider located in SAN DIEGO, CA. NPPES has assigned the NPI number 1639023187 to UNITED MEDICAL DOCTORS on February 23, 2026. It is a Type-2 NPI, indicating this NPI number is associated with an organization. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207RS0012X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Sleep Medicine

Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for UNITED MEDICAL DOCTORS below.

NPI Profile for
UNITED MEDICAL DOCTORS

NPI Number
1639023187
Enumeration Date

(about 3 months ago)
Entity Type
Type-2  Organization
Organization health care providers may have a single employee or thousands of employees. An example is an incorporated individual who is an organization's only employee.
Legal Name
UNITED MEDICAL DOCTORS
Primary location
5643 COPLEY DR STE 240
SAN DIEGO, CA 92111-7903
Phone: (858) 348-9050 Fax:
Mailing address
28078 BAXTER RD STE 530
MURRIETA, CA 92563-1405
Phone: (951) 290-5472 Fax:
Organization Subpart
Yes - UNITED MEDICAL DOCTORS is subpart of another organization.
Authorized Official
JOHN HONG
CEO
Phone: (951) 290-5472
Updated
Certification Date
Feb 23, 2026

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207RS0012X
- Internal Medicine / Sleep Medicine (Primary)
261QS1200X
- Clinic/Center / Sleep Disorder Diagnostic
207QS1201X
- Family Medicine / Sleep Medicine
173F00000X
- Sleep Specialist, PhD

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.