DAVID GU D.O.
NPI 1225107006
Internal Medicine in Alhambra, CA

Q: What is David Gu's NPI number?

The NPI number for David Gu is 1225107006. It was assigned to this individual provider in the NPPES registry on November 7, 2006.

Q: What is David Gu'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 David Gu was last updated on May 2, 2014. 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 07, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 05D1063018 · Waiver

723 S GARFIELD AVE, SUITE 201, ALHAMBRA, CA 91801(626) 282-3999(626) 282-8077 Get Directions Write a Review

NPPES record last updated: May 2, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About David Gu D.o. NPPES

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

DAVID GU D.O. (NPI 1225107006) is an individual internal medicine provider in Alhambra, California, licensed in California (20A6851) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through January 2, 2027, and is a graduate of College Of Osteo Med Of The Pacific At Pomona (1995).

NPPES Registry Identity

NPI1225107006

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDAVID GUCredential: D.O.

Location Address723 S GARFIELD AVE, SUITE 201Alhambra, CA 91801-4429

Mailing Address723 S Garfield Ave, Suite 201Alhambra, CA 91801-4429 · (626) 282-3999 · Fax (626) 282-8077

Phone(626) 282-3999

Fax(626) 282-8077

Sole ProprietorNo

Medical School CMSCollege Of Osteo Med Of The Pacific At PomonaGraduated 1995

Enumeration DateNovember 7, 2006

Last NPPES UpdateMay 2, 2014

✔ NPI 1225107006 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 · 20A6851

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.

723 S GARFIELD AVE, Alhambra, CA 91801

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Other Identifiers 3

Medicare ID-Type UnspecifiedW20A6851CCA

Medicare UPING54423CA

Medicaid00AX68510CA

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

David Gu D.o. 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 ID9335032556

PECOS Enrollment IDI20050407000537

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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D1063018

David G Gu Do A Professional Corp · Alhambra, CA

Active · expires Jan 2, 2027

CLIA Number05D1063018

Laboratory TypePhysician Office

Certificate Effective DateJanuary 3, 2025

Certificate Expiration DateJanuary 2, 2027

Laboratory DirectorDavid G. Gu

Laboratory Phone(626) 282-3999

Laboratory LocationDavid G Gu Do A Professional Corp723 S Garfield Ave Suite 201, Alhambra, CA 91801

CLIA data matches this NPI record on: Address Phone

This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 23

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.

1,207 services270 patients

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

273 services51 patients

Annual alcohol misuse screening, 5 to 15 minutes G0442

An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.

189 services189 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.

176 services176 patients

Annual depression screening, 5 to 15 minutes G0444

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

175 services175 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

150 services107 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

148 services66 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308

A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.

110 services12 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.

55 services49 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

54 services53 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.

38 services25 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.

34 services20 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

30 services19 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.

27 services26 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.

27 services22 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

26 services26 patients

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

20 services20 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

19 services17 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

18 services18 patients

Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306

An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.

14 services12 patients

Pneumococcal vaccine, 23-valent 90732

The 23-valent pneumococcal vaccine is an injection that helps protect against serious infections caused by 23 types of pneumococcal bacteria. It's vital for those at risk, like older adults or people with certain health conditions, to prevent pneumonia, meningitis, and bloodstream infections.

12 services12 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

12 services12 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91801 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.

Referred Medical Equipment & Supplies CMS DME claims 16

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

12 suppliers39 claims85 services$5.45 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

9 suppliers26 claims35 services$1.00 avg. paid by Medicare

Ostomy pouch, drainable; with barrier attached, (1 piece), each A5061

DME-Orthotic Devices · category DF010N

1 supplier13 claims260 services$2.88 avg. paid by Medicare

Skin barrier, wipes or swabs, each A5120

DME-Orthotic Devices · category DF010N

1 supplier13 claims550 services$0.19 avg. paid by Medicare

Enteral feeding supply kit; pump fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4035

Other-Enteral and Parenteral · category OB006N

6 suppliers149 claims4,503 services$4.39 avg. paid by Medicare

Enteral formula, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4150

Other-Enteral and Parenteral · category OB006N

5 suppliers57 claims21,670 services$0.30 avg. paid by Medicare

Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152

Other-Enteral and Parenteral · category OB006N

1 supplier36 claims15,606 services$0.24 avg. paid by Medicare

Enteral formula, nutritionally complete, for special metabolic needs, excludes inherited disease of metabolism, includes altered composition of proteins, fats, carbohydrates, vitamins and/or minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4154

Other-Enteral and Parenteral · category OB006N

5 suppliers65 claims27,776 services$0.54 avg. paid by Medicare

Enteral nutrition infusion pump, any type B9002

Other-Enteral and Parenteral · category OB005N

4 suppliers70 claims70 services$53.37 avg. paid by Medicare

Walker, folding, wheeled, adjustable or fixed height E0143

DME-Other DME · category DE000N

3 suppliers11 claims11 services$30.58 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

2 suppliers18 claims18 services$45.65 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

2 suppliers13 claims13 services$2.94 avg. paid by Medicare

Iv pole E0776

DME-Other DME · category DE000N

4 suppliers131 claims131 services$5.89 avg. paid by Medicare

Wheelchair accessory, manual fully reclining back, (recline greater than 80 degrees), each E1226

DME-Wheelchairs · category DD021N

2 suppliers11 claims11 services$29.04 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

3 suppliers30 claims30 services$9.61 avg. paid by Medicare

Elevating leg rests, pair (for use with capped rental wheelchair base) K0195

DME-Wheelchairs · category DD021N

3 suppliers18 claims18 services$8.92 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 7

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

TONY CHUN-HAI WANG D.D.S

Dentist (General Practice)

723 S GARFIELD AVE, 305
ALHAMBRA, CA 91801

Los Angeles County (626) 281-8226

YUHUAN FRANK LAN M.D.

Physical Medicine & Rehabilitation

723 S GARFIELD AVE, SUITE 304
ALHAMBRA, CA 91801

Los Angeles County (626) 570-0019

WALTER LAM D.D.S.

Dentist

723 S GARFIELD AVE, SUITE 205
ALHAMBRA, CA 91801

Los Angeles County (626) 289-1020

DAVID GU, DO, A PROFESSIONAL CORPORATION

Internal Medicine

723 S GARFIELD AVE, SUITE 201
ALHAMBRA, CA 91801

Los Angeles County (626) 282-3999

CHEN ACUPUNCTURE AND WELLNESS, LLC

Acupuncturist

723 S GARFIELD AVE, SUITE 202
ALHAMBRA, CA 91801

Los Angeles County (626) 492-2338

TONY WANG D.D.S., INC.

Clinic/Center (Dental)

723 S GARFIELD AVE, SUITE 305
ALHAMBRA, CA 91801

Los Angeles County (626) 281-8226

MEDFORD ORTHOPAEDIC MEDICAL CORP

Orthopaedic Surgery

723 S GARFIELD AVE, SUITE 301
ALHAMBRA, CA 91801

Los Angeles County (626) 248-9318

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 David Gu's NPI number?

The NPI number for David Gu is 1225107006. It was assigned to this individual provider in the NPPES registry on November 7, 2006.

Where is David Gu located?

David Gu practices at 723 S Garfield Ave Suite 201, Alhambra, CA 91801. The listed phone number is (626) 282-3999.

What is David Gu's specialty?

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

Is David Gu enrolled in Medicare?

Yes. David Gu 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.

Does David Gu hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D1063018) is associated with this NPI, valid through January 2, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for David Gu was last updated on May 2, 2014. 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.

About David Gu D.o. NPPES

NPPES Registry Identity

Specialties & Licenses

Other Identifiers 3

Medicare Participation & PECOS CMS

Medicare Enrollment Status

CLIA Laboratory Certificates CMS CLIA

Certificate of Waiver · 05D1063018

Areas of Expertise CMS Part B claims 23

Physician Visit Costs CMS claims · ZIP area

Referred Medical Equipment & Supplies CMS DME claims 16

Other Providers at the Same Location NPPES 7

Frequently Asked Questions NPPES & CMS

What is David Gu's NPI number?

Where is David Gu located?

What is David Gu's specialty?

Is David Gu enrolled in Medicare?

Does David Gu hold a CLIA laboratory certificate?

When was this NPI record last updated?

Certificate of Waiver 05D1063018