NPPES file of Aug 9, 2026

Lauren Lynch Hammerman, ACNP

Nurse Practitioner · Saint Louis, MO

Lauren Lynch Hammerman, ACNP is a nurse practitioner with a practice address in Saint Louis, Missouri, and NPI 1629527379, issued on Sep 22, 2016. Check the license (Missouri 2016037500, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629527379
Name
Lauren Lynch Hammerman
Credential
ACNP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
2016037500 MO
Self-reported in NPPES; status is on the state search
Practice location
1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
Phone
(314) 454-8917
Enumerated
Sep 22, 2016
Record last updated
Apr 17, 2025
Fax
(314) 454-7524
Medicaid ID
420037560 MO
Medicare enrollment
Enrolled (PECOS I20161117000194); 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 1 Barnes Jewish Hospital Plz

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

  1. Fizza Abbas, MDInternal Medicine Physician1588079230
  2. Catey Abbott, DOInternal Medicine Physician1699355347
  3. Ramzi Abboud, MDMedical Oncology Physician1649684200
  4. Amy Abdalla, MDRadiation Oncology Physician1932959954
  5. Heba Abdelal, MDAnatomic Pathology & Clinical Pathology Physician1033633383
  6. Ali Abdelhay, MDHospitalist Physician1619540606

Verify Lauren Lynch Hammerman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license 2016037500    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
Find the Missouri 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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The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score71.5
  2. Costout of 100 · 30%59.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Washington UniversitySaint Louis, MO

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

437 nurse practitioner records list a practice address in Saint Louis

They are 437 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,720 nurse practitioner records in Missouri.

All 437 in Saint Louis → All 1,720 in Missouri → Every provider in Saint Louis →

Other nurse practitioner records in Missouri

  1. Caitlin Aaron, NP-CLees Summit, MO1649934340
  2. Sarah Abaricia, FNPSaint Peters, MO1447709365
  3. Maureen Abongo, DNPSaint Louis, MO1225819048
  4. Hawo AbukarBlue Springs, MO1841135084
  5. Morgan Ackerman, NPChesterfield, MO1811625676
  6. Yolanda Acklin, NPFlorissant, MO1881790996
  7. Alina Adams, NPRichmond Heights, MO1003393513
  8. Dorothy Adams, NPHolden, MO1043274210
  9. Holly Adams, MSN, FNP-BCDoniphan, MO1841899614
  10. Lindsey Adams, NP-CFenton, MO1326611757

Common questions

What is Lauren Lynch Hammerman, ACNP's NPI number?

Lauren Lynch Hammerman, ACNP's National Provider Identifier (NPI) is 1629527379, issued on Sep 22, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Lauren Lynch Hammerman, ACNP located?

The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 454-8917. Providers update this record themselves, so call before visiting.

How can I verify Lauren Lynch Hammerman, ACNP's license?

NPPES lists Missouri license number 2016037500, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

What is Lauren Lynch Hammerman, ACNP's MIPS final score?

The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.