NPPES file of Aug 9, 2026

Tammy Wen-Chun Lo, ACNP

Acute Care Nurse Practitioner · Greenwich, CT

Tammy Wen-Chun Lo, ACNP is an acute care nurse practitioner with a practice address in Greenwich, Connecticut, and NPI 1740595792, issued on Aug 15, 2010. Check the license (Connecticut 5568, as entered in NPPES) with the Connecticut 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1740595792
Name
Tammy Wen-Chun Lo
Credential
ACNP
Primary taxonomy
Acute Care Nurse Practitioner 363LA2100X
License number
5568 CT
Self-reported in NPPES; status is on the state search
Practice location
25 Valley Dr, Greenwich, CT 06831
Phone
(203) 661-3333
Enumerated
Aug 15, 2010
Record last updated
Dec 16, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(203) 661-5610
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest acute care nurse practitioner records → All 368 in Connecticut → Look up another NPI →

Also registered at 25 Valley Dr

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

  1. Andrea Douglas, M.D.Neurological Surgery Physician1184656779
  2. Carlee LockrowNurse Practitioner1972394526
  3. Lauren Mendelsohn-Levin, M.D.Pediatrics Physician1609000595
  4. Courtney Raker, M.D.Pediatrics Physician1073926747
  5. Jesus Santiago, PASurgical Physician Assistant1215044672

Verify Tammy Wen-Chun Lo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
    Search for license 5568    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 Connecticut license search

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Industry payments in 2024: $1,997.17

97 payments; by number, the most common kind was food and beverage; the largest payer was Celgene Corporation. The 10,984 providers of this specialty with any payment received $647.94 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Tammy Lo$1,997.17
  2. Specialty average$647.94

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Tammy Wen-Chun Lo among 368 acute care nurse practitioner records in Connecticut

Tammy Wen-Chun Lo, ACNP is one of 368 acute care nurse practitioner records with a practice address in Connecticut. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 23% of them.

  • NPI issued2010 · 23% of these records are older, 74% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileNo · 74% of these records are
  • Record last updated2016 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Acute Care Nurse Practitioner providers in Connecticut

There are 368 acute care nurse practitioner records in Connecticut.

All 368 in Connecticut → Every provider in Greenwich → Acute Care Nurse Practitioner nationwide →

The 8 acute care nurse practitioner records with the nearest ZIP codes

  1. Charlotte Sperling, APRNGreenwich, CT 068311790400950
  2. Christopher Miller, APRNGreenwich, CT 068301073391777
  3. Catherine Burdge, APRNFairfield, CT 068251548421019
  4. June Reinman, NPNorwalk, CT 068501538722772
  5. Yuliya Koshkina, AGACNP-BCNorwalk, CT 068511003668294
  6. Christie AllenDanbury, CT 068101003512864
  7. Kristin Bott, ACNP-BC, APRNDanbury, CT 068101518245091
  8. Nina HamilakisDanbury, CT 068101841155785

Common questions

What is Tammy Wen-Chun Lo, ACNP's NPI number?

Tammy Wen-Chun Lo, ACNP's National Provider Identifier (NPI) is 1740595792, issued on Aug 15, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Tammy Wen-Chun Lo, ACNP located?

The NPPES record lists a practice address at 25 Valley Dr, Greenwich, CT, 06831. Phone: (203) 661-3333. Providers update this record themselves, so call before visiting.

How can I verify Tammy Wen-Chun Lo, ACNP's license?

NPPES lists Connecticut license number 5568, as entered by the provider. Search the Connecticut 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. 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.