NPPES file of Aug 9, 2026

Ling Guo

Gastroenterology Physician · Seattle, WA

Ling Guo is a gastroenterology physician with a practice address in Seattle, Washington, and NPI 1952721771, issued on Apr 19, 2014. Check the license (Washington 61061516, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1952721771
Name
Ling Guo
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
61061516 WA
Self-reported in NPPES; status is on the state search
Practice location
125 16TH Ave E, Seattle, WA 98112
Phone
(206) 326-3000
Enumerated
Apr 19, 2014
Record last updated
Apr 7, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20200914000655); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 125 16TH Ave E

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Arthur Abbott, M.D.Family Medicine Physician1255488847
  2. William Affolter, M.D.Family Medicine Physician1902953367
  3. Kanthi Akkineni, PA-CMedical Physician Assistant1346649282
  4. Nouredin Alebouyeh, M.D.Gastroenterology Physician1144454711
  5. Gregory Allen, M.D.Family Medicine Physician1760530026
  6. Abraham Alvarado-Gonzalez, MDNeurological Surgery Physician1346642501

Verify Ling Guo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license 61061516
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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75% fewer Medicare Part D claims than the average gastroenterology physician in 2024

203 Medicare Part D claims for 81 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Ling Guo203
  2. Specialty average811

Most prescribed

  1. Mesalamine58 claims
  2. Gavilyte-C51 claims
  3. Omeprazole25 claims
  4. Creon14 claims
  5. Balsalazide Disodium11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Kaiser Foundation Health Plan OF WashingtonSeattle, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ling Guo among 533 gastroenterology physician records in Washington

Ling Guo is one of 533 gastroenterology physician records with a practice address in Washington. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 83% of them.

  • NPI issued2014 · 83% of these records are older, 14% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2011 · median 2003 among the 373 with a school on file
  • Record last updated2021 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Washington

There are 533 gastroenterology physician records in Washington.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Nouredin Alebouyeh, M.D.Seattle, WA 981121144454711
  2. Andrew Feld, MDSeattle, WA 981121003818709
  3. Charles Landis, MDSeattle, WA 981121659512895
  4. Steven Lin, MD, MPHSeattle, WA 981121245673540
  5. Austin LinSeattle, WA 981121316476997
  6. Rubeela Malik, M.D.Seattle, WA 981121962575928
  7. Christine Pizzute, M.D.Seattle, WA 981121154549830
  8. Sheldon Rosen, M.D.Seattle, WA 981121487707196

Common questions

What is Ling Guo's NPI number?

Ling Guo's National Provider Identifier (NPI) is 1952721771, issued on Apr 19, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Ling Guo located?

The NPPES record lists a practice address at 125 16TH Ave E, Seattle, WA, 98112. Phone: (206) 326-3000. Providers update this record themselves, so call before visiting.

How can I verify Ling Guo's license?

NPPES lists Washington license number 61061516, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Ling Guo prescribe under Medicare Part D?

In 2024, Ling Guo had 203 Medicare Part D claims for 81 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.