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Dr. Culbert M. Serrano, M.D.

Internal Medicine (Internal Medicine Physician)

904 7th Ave
Seattle, WA 98104

Who else practices at this address →

King County includes primary care (5% of residents) and dental (4% of residents) and mental health (4% of residents) shortage areas. About shortage areas

Call (206) 329-1760

  • Medicare participating

At a glance

Years since graduation
31
In the NPI registry since
2006
Medicare patients seen, 2024
102

Licensed in Washington since 2004, according to the Washington State Department of Health. 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

  • Internal Medicine Physician primary
    WA license MD00044243 (first issued 2004; active)

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

Map: Internal Medicine per capita by county →

Where they work

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
102
Services billed
662
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes324198
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit247247
Telephone medical discussion with physician, 11-20 minutes138105
Telephone medical discussion with physician, 5-10 minutes11372
Insertion of needle into vein for collection of blood sample6850
Established patient office or other outpatient visit, 40-54 minutes6759
Hemoglobin a1c level6046
Established patient office or other outpatient visit, 20-29 minutes4237
Testing for presence of drug, read by direct observation1616
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use1616

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

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

Other Internal Medicine clinicians in Seattle

Sources

NPI registry (CMS NPPES, November 2026; record last updated June 7, 2026), 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 1922038827. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.