DR. THOMAS TOAN NGUYEN MD
NPI 1336272871
Internal Medicine in San Luis Obispo, CA

Q: What is Thomas Nguyen's NPI number?

The NPI number for Thomas Nguyen is 1336272871. It was assigned to this individual provider in the NPPES registry on March 13, 2007.

Q: What is Thomas Nguyen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Thomas Nguyen was last updated on May 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.

Active since March 13, 2007PECOS EnrolledAccepts Medicare Assignment

83.63/100

CMS Quality Rating

892 AEROVISTA PL STE 210, SAN LUIS OBISPO, CA 93401(805) 549-8023 Get Directions Write a Review

NPPES record last updated: May 20, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 20, 2025, Mar 31, 2025, Nov 2, 2016 and 1 more (4 updates tracked since 2015).

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About Dr. Thomas Toan Nguyen Md NPPES

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

DR. THOMAS TOAN NGUYEN MD (NPI 1336272871) is an individual internal medicine provider in San Luis Obispo, California, licensed in California (A97300) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2003).

NPPES Registry Identity

NPI1336272871

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. THOMAS TOAN NGUYENCredential: MD

Location Address892 AEROVISTA PL STE 210San Luis Obispo, CA 93401-8054

Mailing Address5767 W Century Blvd Suite 400Los Angeles, CA 90095-5631 · (310) 301-8707

Phone(805) 549-8023

Sole ProprietorNo

Medical School CMSOtherGraduated 2003

Enumeration DateMarch 13, 2007

Last NPPES UpdateMay 20, 20254 updates tracked since enumeration

NPPES CertifiedMay 20, 2025

✔ NPI 1336272871 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 · A97300

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.

892 AEROVISTA PL STE 210, San Luis Obispo, CA 93401

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Other Identifiers 1

OtherCB241590CA · Medicare Id

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

Dr. Thomas Toan Nguyen Md 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 ID1658468665

PECOS Enrollment IDI20071107000279

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 6

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

706 services385 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

170 services143 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

135 services135 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

30 services28 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

24 services24 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93401 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

$135.73 typical visit price

range $59.84 – $178.89

Typical copayment $33.93 (range $14.96 – $44.72)

Most-billed visit code 99204

Established Patient

$104.82 typical visit price

range $19.70 – $146.55

Typical copayment $26.20 (range $4.92 – $36.63)

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.

83.63/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

72.79

Promoting Interoperability

Improvement Activities

Cost

62.56

Reported Quality Measures

Appropriate Treatment for Upper Respiratory Infection (URI)

50%42 patients3/55-star benchmark: 100%

Breast Cancer Screening

76%1,090 patients4/55-star benchmark: 93%

Cervical Cancer Screening

68%1,486 patients3/55-star benchmark: 98%

Colorectal Cancer Screening

76%2,559 patients4/55-star benchmark: 88%

Controlling High Blood Pressure

71%1,520 patients4/55-star benchmark: 91%

Diabetes: Eye Exam

19%517 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

21%517 patients4/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

99%8,940 patients4/55-star benchmark: 100%

HIV Screening

9%3,077 patients1/55-star benchmark: 60%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

88%4,207 patients4/55-star benchmark: 98%

Preventive Care and Screening: Screening for Depression and Follow-Up Plan

94%3,227 patients4/55-star benchmark: 97%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

32%4,891 patients3/55-star benchmark: 61%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients combinedPopulations: 96% · 3,738 patients

Patients screened: 98% · 3,738 patients

77%247 patients4/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

77%1,277 patients4/55-star benchmark: 91%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 20

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

14 suppliers43 claims86 services$6.08 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604