Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Marlene Peng, MD
Allergy Physician in Seattle, WA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770697112
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Registry record
Entity type Individual (Type 1)
Name Dr. Marlene Peng
Credential MD
Sex Female
Practice address 515 Minor Ave, 3rd Floor, Seattle, WA, 98104
Phone (206) 386-9500
Fax (206) 576-3802
Enumeration date Aug 19, 2006
Last updated in NPPES Jun 23, 2021
Taxonomy & licenses
207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 68453341205 (UT) Secondary
2080P0201X Pediatric Allergy/Immunology Physician Allopathic & Osteopathic Physicians · License 46653 (WI) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 256768 | Other | WA | LNI |
| 8560427 | Medicaid | WA | - |
| 0024PE | Other | WA | REGENCE |
| 34622400 | Medicaid | WI | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
How do I verify Marlene Peng's NPI record?
Cross-check NPI 1770697112 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1770697112 active?
Yes, as of the latest NPPES snapshot, NPI 1770697112 is active (record last updated 2021-06-23).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-23.