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SON LAM NGUYEN M.D.
NPI 1114119526
Internal Medicine in Fairfield, CA

Active since August 10, 2007PECOS EnrolledAccepts Medicare Assignment
85.53/100
CMS Quality Rating
1525 WEBSTER ST, A, FAIRFIELD, CA 94533(707) 423-9484 Get Directions Write a Review

NPPES record last updated: October 18, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Son Lam Nguyen M.d. NPPES

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

SON LAM NGUYEN M.D. (NPI 1114119526) is an individual internal medicine provider in Fairfield, California, licensed in California (A100779) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1114119526
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSON LAM NGUYENCredential: M.D.
Location Address1525 WEBSTER ST, AFairfield, CA 94533-4997
Mailing Address5184 Palace CtFairfield, CA 94534-4161 · (707) 863-7485
Phone(707) 423-9484
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateAugust 10, 2007
Last NPPES UpdateOctober 18, 2008
✔ NPI 1114119526 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 · A100779
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.
1525 WEBSTER ST, Fairfield, CA 94533
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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 and accepts Medicare assignment

Son Lam Nguyen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8921155227
PECOS Enrollment IDI20090402000124
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.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
378 services168 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
300 services152 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
171 services166 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
58 services58 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
48 services23 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
41 services41 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94533 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
$145.83 typical visit price
range $65.02 – $191.95
Typical copayment $36.45 (range $16.25 – $47.98)
Most-billed visit code 99204
Established Patient
$113.05 typical visit price
range $21.86 – $157.69
Typical copayment $28.26 (range $5.46 – $39.42)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.53/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality97.15
Improvement Activities0
Cost83.57

Other Providers at the Same Location NPPES 9

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

DR. FULTON JOSEPH ZINK DDS
Dentist (Periodontics)
1525 WEBSTER ST, SUITE F
FAIRFIELD, CA 94533
Solano County (707) 426-0541
BAY AREA PULMONARY AND CRITICAL CARE MEDICAL GROUP
Internal Medicine (Pulmonary Disease)
1525 WEBSTER ST, SUITE A
FAIRFIELD, CA 94533
Solano County (707) 423-2506
FRANKLYN E SEABROOKS MD
Orthopaedic Surgery
1525 WEBSTER ST, SUITE A
FAIRFIELD, CA 94533
Solano County (707) 423-2510
ROBERT A. VARADY M.D. INC. A PROFESSIONAL CORPORATION
Family Medicine
1525 WEBSTER ST, SUITE B
FAIRFIELD, CA 94533
Solano County (707) 428-0778
YOLANDA WAFER
Orthotic Fitter
1525 WEBSTER ST, SUITE E
FAIRFIELD, CA 94533
Solano County (707) 425-5028
DR. MERLE RAY SOGGE M.D.
Internal Medicine (Gastroenterology)
1525 WEBSTER ST, SUITE A
FAIRFIELD, CA 94533
Solano County (707) 423-2506
INTERCOMMUNITY MEDICAL GROUP
Internal Medicine
1525 WEBSTER ST, STE A
FAIRFIELD, CA 94533
Solano County (907) 423-2510
KYLE F ECKHART CPO
Orthotic Fitter
1525 WEBSTER ST, STE. E
FAIRFIELD, CA 94533
Solano County (707) 425-5028

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 Son Nguyen's NPI number?

The NPI number for Son Nguyen is 1114119526. It was assigned to this individual provider in the NPPES registry on August 10, 2007.

Where is Son Nguyen located?

Son Nguyen practices at 1525 Webster St A, Fairfield, CA 94533. The listed phone number is (707) 423-9484.

What is Son Nguyen's specialty?

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

Is Son Nguyen enrolled in Medicare?

Yes. Son Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Son Nguyen was last updated on October 18, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.