DR. THANH NGUYEN-DINH M.D.
NPI 1063495323
Internal Medicine - Geriatric Medicine in San Leandro, CA

Q: What is Thanh Nguyen-dinh's NPI number?

The NPI number for Thanh Nguyen-dinh is 1063495323. It was assigned to this individual provider in the NPPES registry on November 21, 2005.

Q: What is Thanh Nguyen-dinh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Q: When was this NPI record last updated?

The NPPES record for Thanh Nguyen-dinh was last updated on December 27, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.

Active since November 21, 2005PECOS EnrolledAccepts Medicare Assignment

90.21/100

CMS Quality Rating

716 RAINEER CT, SAN LEANDRO, CA 94577(408) 681-8999 Get Directions Write a Review

NPPES record last updated: December 27, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Thanh Nguyen-dinh M.d. NPPES

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

DR. THANH NGUYEN-DINH M.D. (NPI 1063495323) is an individual geriatric medicine provider in San Leandro, California, licensed in Virginia (0101-31818) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1974).

NPPES Registry Identity

NPI1063495323

Entity TypeIndividualMale

Primary Taxonomy207RG0300X

Provider Legal NameDR. THANH NGUYEN-DINHCredential: M.D.

Location Address716 RAINEER CTSan Leandro, CA 94577-1556

Mailing Address716 Raineer CtSan Leandro, CA 94577-1556 · (408) 681-8999

Phone(408) 681-8999

Sole ProprietorYes

Medical School CMSOtherGraduated 1974

Enumeration DateNovember 21, 2005

Last NPPES UpdateDecember 27, 2013

✔ NPI 1063495323 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RG0300X

License✔ Licensed in VA · 0101-31818

Definition

An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

716 RAINEER CT, San Leandro, CA 94577

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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 and accepts Medicare assignment

Dr. Thanh Nguyen-dinh 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 ID143224063

PECOS Enrollment IDI20060907000554

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 Reassignments

Medicare enrollment records show Thanh Nguyen-dinh reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Asian Health Services

6.9 mi

Federally Qualified Health Center (FQHC)

250 E 18TH ST FL 2
Oakland, CA 94606

Reassigned Medicare billing, California enrollment
130 clinicians in this Medicare group

NPI 1003134545 (510) 986-6860

John Muir Physician Network

15 mi

General Practice

1450 TREAT BLVD, SUITE 300
Walnut Creek, CA 94597

Reassigned Medicare billing, California enrollment
650 clinicians in this Medicare group

NPI 1841407665 (925) 296-9872

County Of Santa Clara

20 mi

Clinic/Center

2741 MIDDLEFIELD RD
Palo Alto, CA 94306

Reassigned Medicare billing, California enrollment
2,460 clinicians in this Medicare group

NPI 1285228080 (408) 885-5000

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

Areas of Expertise CMS Part B claims 14

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 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.

454 services448 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

293 services293 patients

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.

168 services165 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

138 services134 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428

This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.

66 services66 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

51 services49 patients

Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) 87880

A detection test by immunoassay for Group A Strep is a quick procedure to identify a bacterial infection in your throat. It involves taking a throat swab and applying it to a test strip, which changes color if Strep bacteria are present.

50 services50 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.

29 services29 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

28 services28 patients

Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen 87635

This is a lab test that detects the presence of COVID-19 in your body. It uses a technique to amplify the virus's genetic material, either DNA or RNA, making it easier to identify. A positive result indicates an active infection.

18 services18 patients

Administration of vaccine 90471

Administering a vaccine involves injecting a small, safe piece of a virus or bacteria into your body. This triggers your immune system to recognize and fight off the disease in the future. It's a vital tool in preventing serious illnesses and maintaining public health.

16 services16 patients

New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

14 services14 patients

Diphtheria, tetanus, and acellular pertussis vaccine (7 years or older) 90715

The Diphtheria, Tetanus, and Acellular Pertussis vaccine, also known as Tdap, is an immunization given to protect against three serious diseases. It's recommended for those aged 7 or older. The vaccine stimulates your body to build defenses against these infections, promoting overall health.

13 services13 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94577 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

$202.35 typical visit price

range $69.00 – $202.35

Typical copayment $50.58 (range $17.25 – $50.58)

Most-billed visit code 99205

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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.

90.21/100

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

Individually scored

Quality

94.69

Promoting Interoperability

100

Improvement Activities

Cost

72.69

Reported Quality Measures

Appropriate Testing for Pharyngitis

98%84 patients4/55-star benchmark: 100%

Appropriate Treatment for Upper Respiratory Infection (URI)

93%398 patients4/55-star benchmark: 100%

Appropriate Use of DXA Scans in Women Under 65 Years Who Do Not Meet the Risk Factor Profile for Osteoporotic Fracture

Lower rates are better for this measure.

2%306 patients

Breast Cancer Screening

78%1,044 patients4/55-star benchmark: 93%

Cervical Cancer Screening

62%1,887 patients3/55-star benchmark: 98%

Chlamydia Screening for Women

42%209 patients

Colorectal Cancer Screening

60%2,180 patients3/55-star benchmark: 88%

Controlling High Blood Pressure

75%1,086 patients4/55-star benchmark: 91%

Diabetes: Eye Exam

27%365 patients2/55-star benchmark: 100%

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

Lower rates are better for this measure.

36%365 patients3/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

99%5,299 patients4/55-star benchmark: 100%

e-Prescribing

100%3,847 patients5/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

55%1,494 patients3/55-star benchmark: 100%

HIV Screening

34%3,659 patients3/55-star benchmark: 60%

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

40%4,440 patients2/55-star benchmark: 98%

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

31%3,539 patients2/55-star benchmark: 97%

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

Patients screened: 96% · 231 patients

93%231 patients

Provide Patients Electronic Access to Their Health Information

100%5,084 patients5/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

74%1,200 patients3/55-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.

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 Thanh Nguyen-dinh's NPI number?

The NPI number for Thanh Nguyen-dinh is 1063495323. It was assigned to this individual provider in the NPPES registry on November 21, 2005.

Where is Thanh Nguyen-dinh located?

Thanh Nguyen-dinh practices at 716 Raineer Ct, San Leandro, CA 94577. The listed phone number is (408) 681-8999.

What is Thanh Nguyen-dinh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Thanh Nguyen-dinh enrolled in Medicare?

Yes. Thanh Nguyen-dinh 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.

Which organizations bill Medicare for Thanh Nguyen-dinh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thanh Nguyen-dinh reassigns Medicare benefits to 3 organizations: Asian Health Services (Oakland, CA), John Muir Physician Network (Walnut Creek, CA) and County Of Santa Clara (Palo Alto, CA). Each 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 Thanh Nguyen-dinh'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 Thanh Nguyen-dinh was last updated on December 27, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.