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Dr. Daniel Y. Lee, M.D.

Gastroenterology (Gastroenterology Physician)

8008 Frost St., #200
San Diego, CA 92123

Who else practices at this address →

San Diego County includes primary care (1% of residents) and mental health (1% of residents) shortage areas. About shortage areas

Call (858) 292-7527

  • Medicare participating

At a glance

Years since graduation
31
In the NPI registry since
2006
Medicare patients seen, 2024
494

Licensed in California since 1998, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Gastroenterology Physician primary
    CA license A66022 (first issued 1998; current)

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Gastroenterology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
494
Services billed
1,057
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 20-29 minutes12494
Biopsy of large bowel using a flexible endoscope109109
Removal of polyps or growths of large bowel using an endoscope with mechanical snare9292
Established patient office or other outpatient visit, 10-19 minutes8871
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope6966
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes6359
New patient office or other outpatient visit, 30-44 minutes6262
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito6158
New patient office or other outpatient visit, 45-59 minutes5353
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes3728

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Sod Sulf-Potass Sulf-Mag Sulf (sodium, potassium,mag sulfates)
Other prescribers in San Diego, CA
125
Omeprazole
Other prescribers in San Diego, CA
77
Famotidine
Other prescribers in San Diego, CA
24
Suflave (peg 3350/sod sulf,chlr/pot/mag)21
Pantoprazole Sodium
Other prescribers in San Diego, CA
21
Vemlidy (tenofovir alafenamide)17
Lactulose
Other prescribers in San Diego, CA
17
Cholestyramine (cholestyramine (with sugar))
Other prescribers in San Diego, CA
16
Mercaptopurine12
Mesalamine
Other prescribers in San Diego, CA
12

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 10 companies reported 20 payments worth $426 in total to this clinician.

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in California →

Other Gastroenterology clinicians in San Diego

Sources

NPI registry (CMS NPPES, November 2026; record last updated January 10, 2020), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1063522613. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.