Dr. David Gu, DO
- Medicare services, 2024
- 2,931
- Medicare patients, 2024
- 334
- Part D claims, 2024
- 23,435
- Industry payments
- $69,738
- Affiliated sites
- 4
- Practice address
- 723 S Garfield Ave, Alhambra, CA 91801
- Practice phone
- Call (626) 282-3999
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
David Gu, DO, a Professional Corporation
Alhambra, California
Find Dr. Gu's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. David Gu is an internist in Alhambra, California
Dr. Gu practices at David Gu, DO, a Professional Corporation in Alhambra, California.
Dr. Gu's NPI, 1225107006, was assigned on November 7, 2006. Dr. Gu graduated from WesternU College of Osteopathic Medicine of the Pacific in 1995. Dr. Gu holds California license 20A6851.
- NPI
- 1225107006NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335032556
- NPI enumeration date
- November 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 282-3999
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Gu practices at David Gu, DO, a Professional Corporation in Alhambra, California
Dr. Gu's primary practice is David Gu, DO, a Professional Corporation, at 723 S Garfield Ave, Alhambra, CA 91801 in Los Angeles County. The practice phone is (626) 282-3999.
- David Gu, DO, a Professional Corporation723 S Garfield Ave, Alhambra, CA 91801 · Los Angeles CountyPhone(626) 282-3999
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David Gu is affiliated with 5 sites of care and 1 medical group
Dr. Gu's primary practice is David Gu, DO, a Professional Corporation in Alhambra, California. The medical group on file is David Gu, DO. Dmand AI also links Dr. Gu to 2 more skilled nursing facilities, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David Gu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gu practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| David Gu, DO, a Professional Corporation | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Gu is one of 16,751 internists in California
Internal medicine is Dr. Gu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gu is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute skin infection, alzheimer's disease, aneurysm, aortic atherosclerois, arthritis and asthma among the conditions Dr. Gu treats.
Internists near Dr. Gu
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David Gu billed Medicare for 2,931 services in 2024
CMS data shows 2,931 Medicare services from Dr. Gu across 24 procedure codes in 2024, for 334 Medicare patients. Medicare paid $180,994 for them.
Dr. Gu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,9352024: 1,73841%
- Other services
- 2023: 8212024: 73810%
- Tests and treatments
- 2023: 3562024: 23733%
- Surgery
- 2023: 2262024: 15034%
- Lab and pathology
- 2023: 322024: 3819%
- Drugs given in the office
- 2023: 472024: 3036%
Where Dr. Gu's Medicare services took place, 2024
- In an office2,51486%
- In a facility41714%
Dr. Gu compared with the California median for internists, 2024
- Dr. Gu
- California median
- Medicare services
- 2,931vs 3618.1 times
- Medicare patients
- 334vs 1512.2 times
- Part D claims
- 22,603vs 42153.7 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Gu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Gu?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gu and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Gu treated 334 Medicare patients in 2024, average age 76
CMS counts 334 Medicare patients who saw Dr. Gu in 2024. The largest group is 75 to 84, with 124 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 81% are also on Medicaid. Their average risk score is 1.76, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Gu's median patient age at 70, with 55% women.
Dr. Gu's Medicare patients by age, 2024
Dr. Gu's Medicare patients by sex, 2024
- Women20862%
- Men12638%
Chronic conditions among Dr. Gu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes50%
- Ischemic heart disease44%
- Osteoporosis41%
- Arthritis38%
- Alzheimer's and dementia31%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Gu wrote 23,435 Medicare Part D claims in 2024
In 2024, Dr. Gu wrote 23,435 Medicare Part D claims for 666 patients. 84% of them were for generic drugs. CMS names the drug for 22,603 of them, across 259 drugs with 11 or more claims each, at $2,360,421 in total drug cost. In 2023, CMS named 26,439 claims across 280 drugs.
Dr. Gu's Part D claims by kind of drug, 2024
- Generic19,799 claims84%
- Brand-name3,470 claims15%
- Other166 claims1%
Dr. Gu's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Gu's Part D claims, 2024
- Opioids1%127 of 23,435 claims
- Antibiotics3%690 of 23,435 claims
- Antipsychotics, patients 65 and over1%189 of 23,435 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 26,4392024: 22,60315%
Drugs named by CMS: 259 in 2024, 280 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. David Gu takes part in Medicare
Dr. Gu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. David Gu received $69,738 in industry payments from 2016 to 2025
CMS Open Payments shows 997 general payments to Dr. Gu from 51 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 62% of the total. Gilead Sciences, Inc. paid the most, $38,837.
General payments to Dr. Gu by program year, 2016 to 2025
General payments to Dr. Gu by kind, 2016 to 2025
- Speaker and faculty fees$43,23062%
- Food and beverage$24,57335%
- Travel and lodging$1,8013%
- Education$1340%
Companies that paid Dr. Gu the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Gu graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Gu graduated from WesternU College of Osteopathic Medicine of the Pacific in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. David Gu accepts plans from 17 insurance carriers
Dr. Gu is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- LA Care
- Blue Cross Blue Shield of Massachusetts
- Molina
- +9 more carriersWith a free account
Plan types Dr. Gu accepts, by number of carriers
- HMO9
- Medicare9
- PPO9
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. David Gu's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. David Gu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. David Gu's NPI number?
Dr. David Gu's NPI number is 1225107006. It was assigned on November 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Gu?
Dr. David Gu is an internist in Alhambra, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David Gu practice?
Dr. Gu practices at 723 S Garfield Ave, Alhambra, CA 91801. Dr. Gu's primary practice is David Gu, DO, a Professional Corporation in Alhambra, California. Dmand AI also links Dr. Gu to 2 skilled nursing facilities, 1 group practice or clinic and 1 home health agency.
What is Dr. David Gu's office phone number?
The practice phone on file for Dr. Gu is (626) 282-3999.
What is Dr. David Gu's medical license number?
Dr. Gu holds California license 20A6851.
What medical group is Dr. David Gu part of?
Dr. Gu is linked to David Gu, DO.
Does Dr. David Gu accept Medicare?
Yes. CMS data shows Dr. Gu billed Medicare for 2,931 services in 2024, and Dr. Gu accepts Medicare assignment.
How many Medicare patients does Dr. David Gu see?
CMS counts 334 Medicare patients who saw Dr. Gu in 2024, with an average age of 76.
What services does Dr. David Gu bill to Medicare?
In 2024, Dr. Gu's most billed Medicare services were office visit, established patient (99213), nursing facility care (99309) and medicare service (G0439).
Where did Dr. David Gu go to medical school?
Dr. Gu graduated from WesternU College of Osteopathic Medicine of the Pacific in 1995.
Show 4 more questionsShow fewer questions
What drugs does Dr. David Gu prescribe most?
In 2024 Medicare Part D data, Dr. Gu's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Levocetirizine Dihydrochloride.
Has Dr. David Gu received payments from drug or device companies?
CMS Open Payments shows $69,738 in general payments to Dr. Gu from 51 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. David Gu been practicing?
Dr. Gu graduated from medical school in 1995, 31 years ago.
What insurance does Dr. David Gu accept?
Dr. Gu is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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