Sergio Arellano-Ayala, NP
Acute Care Nurse Practitioner · Baltimore, MD
Sergio Arellano-Ayala, NP is an acute care nurse practitioner with a practice address in Baltimore, Maryland, and NPI 1891328779, issued on Feb 19, 2020. Check the license with the Maryland board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Sergio Arellano-Ayala
- Credential
- NP
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- AP144156 TX
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St # S4D03, Baltimore, MD 21201
- Phone
- (410) 328-5831
- Enumerated
- Feb 19, 2020
- Record last updated
- Feb 19, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20260604000804); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Sergio Arellano-Ayala in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
423 acute care nurse practitioner records list a practice address in Baltimore
They are 423 of the 35,183 NPPES records with a practice address in Baltimore, and 755 acute care nurse practitioner records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 423 in Baltimore → All 755 in Maryland → Every provider in Baltimore →
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Common questions
What is Sergio Arellano-Ayala, NP's NPI number?
Sergio Arellano-Ayala, NP's National Provider Identifier (NPI) is 1891328779, issued on Feb 19, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Sergio Arellano-Ayala, NP located?
The NPPES record lists a practice address at 22 S Greene St # S4D03, Baltimore, MD, 21201. Phone: (410) 328-5831. Providers update this record themselves, so call before visiting.
How can I verify Sergio Arellano-Ayala, NP's license?
Search the Maryland board that licenses this profession; the NPPES record confirms identity 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. 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.