What is Chung Cuiffo's NPI number?

Chung Cuiffo's National Provider Identifier (NPI) is 1659630556, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Chung Cuiffo's specialty?

Chung Cuiffo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Chung Cuiffo located?

Chung Cuiffo's practice location on file with NPPES is 1100 W Stewart Dr, Orange, CA 92868-3849.

What is Chung Cuiffo's phone number?

The practice phone number listed in the NPPES registry for Chung Cuiffo is (714) 771-8000.

Does Chung Cuiffo accept Medicare?

Chung Cuiffo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Chung Cuiffo's NPI active?

Yes — Chung Cuiffo's NPI (1659630556) is active in the NPPES registry as of the last update on 2020-10-21.

IndividualActiveAccepts Medicare

Chung Cuiffo, M.D.

NPI 1659630556 · Internal Medicine Physician · Orange, CA

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Chung Cuiffo, M.D. is a Internal Medicine Physician provider in Orange, CA (NPI 1659630556).

Provider details

NPI number: 1659630556
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense A131324 (CA)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Established profile(62/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
14 yrs in NPPES registry
Profile completeness28% of score
83% of core fields populated
Practice footprint17% of score
3 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
200 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	158	$179
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	42	$135

Typical Medicare-allowed amounts for these services range $135–$179 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Practice location

1100 W Stewart Dr

Orange, CA 92868-3849

Phone: (714) 771-8000

Fax: (714) 937-7083

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Mailing address