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DR. NATHAN KEITH PARK MD
NPI 1982165247
Internal Medicine in Orange, CA

Active since March 28, 2019PECOS Enrolled
101 THE CITY DR S, ORANGE, CA 92868(714) 880-7812(714) 456-8874 Get Directions Write a Review

NPPES record last updated: March 21, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Nathan Keith Park Md NPPES

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

DR. NATHAN KEITH PARK MD (NPI 1982165247) is an individual internal medicine provider in Orange, California, licensed in California (2089) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1982165247
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. NATHAN KEITH PARKCredential: MD
Location Address101 THE CITY DR SOrange, CA 92868-3201
Mailing Address200 S Manchester Ave Ste 300Orange, CA 92868-3219 · (714) 456-2986
Phone(714) 880-7812
Fax(714) 456-8874
Sole ProprietorNo
Enumeration DateMarch 28, 2019
Last NPPES UpdateMarch 21, 2023
NPPES CertifiedMarch 21, 2023
✔ NPI 1982165247 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 · 2089
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.
101 THE CITY DR S, Orange, CA 92868
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Nathan Keith Park 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.

Medicare Billing Reassignment

Medicare enrollment records show Nathan Park reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Regents Of The University Of California-Irvine
0.3 mi
Hospitalist
101 THE CITY DR S BLDG 1
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 250 clinicians in this Medicare group
NPI 1154479723 (714) 456-7002

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92868 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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 20

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

DR. ANKIT BHUPENDRA PATEL D.O.
Radiology (Diagnostic Radiology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-5113
DR. LAURA CATHERINE SKOCZYLAS MD
Obstetrics & Gynecology
101 THE CITY DR S, BUILDING 56, DEPARTMENT OF OB/GYN
ORANGE, CA 92868
Orange County (714) 456-8224
MICHAEL CHENG DO
Internal Medicine (Rheumatology)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7110
AESTHETIC AND PLASTIC SURGERY INSTITUTE
Plastic Surgery
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-2986
JOSEPH VILLARREAL M.D.
Emergency Medicine
101 THE CITY DR S, BUILDING 1A, ROOM 1009
ORANGE, CA 92868
Orange County (714) 456-5239
DEMI TRAN
Psychiatry & Neurology (Neurology)
101 THE CITY DR S, CITY TOWER, SUITE 400
ORANGE, CA 92868
Orange County (171) 456-6693
DR. ISABEL CARLTON CLARK M.D.
Surgery (Trauma Surgery)
101 THE CITY DR S
ORANGE, CA 92868
Orange County (714) 456-7890
DYLAN LUKATO
Emergency Medicine
101 THE CITY DR S
ORANGE, CA 92868
Orange County (415) 218-8041

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 Nathan Park's NPI number?

The NPI number for Nathan Park is 1982165247. It was assigned to this individual provider in the NPPES registry on March 28, 2019.

Where is Nathan Park located?

Nathan Park practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 880-7812.

What is Nathan Park's specialty?

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

Is Nathan Park enrolled in Medicare?

Yes. Nathan Park is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nathan Park's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathan Park reassigns Medicare benefits to The Regents Of The University Of California-Irvine (Orange, CA). The 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 Nathan Park's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Nathan Park was last updated on March 21, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.