Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Peggy Lyn Johnson, M.D.
Psychiatry Physician in Boston, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1588626501
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Ms. Peggy Lyn Johnson
Credential M.D.
Sex Female
Practice address 30 Winter St, Suite 802, Boston, MA, 02108
Phone (617) 426-0600
Enumeration date Apr 5, 2006
Last updated in NPPES Jul 2, 2014
Taxonomy & licenses
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 |
|---|---|---|---|
| 1221905 | Medicaid | MA | - |
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
Where does Peggy Johnson practice?
The practice location on file with NPPES is in Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Peggy Johnson?
The National Provider Identifier (NPI) for Peggy Johnson is 1588626501, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Boston Alcohol and Substance Abuse Program Substance Use Disorder Rehabilitation Clinic/Center · Boston, MA NPI 1346329463 Jacob Kagan Psychiatry Physician · Boston, MA NPI 1336282565 Thomas Delaney Social Worker · Boston, MA NPI 1104047166 Reyna Lounsbury Nurse Practitioner · Boston, MA NPI 1528252434 Lady-Thelma Bolduc Family Nurse Practitioner · Boston, MA NPI 1447562335 Cara Cavazza Nurse Practitioner · Boston, MA NPI 1063713030 Amparo Velasquez Addiction (Substance Use Disorder) Counselor · Boston, MA NPI 1740579499 Brynn O'Donnell Nurse Practitioner · Boston, MA NPI 1205252731
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-07-02.