DR. JOHN B MCCAHAN (M.D.) – Pediatrics Physician, NPI 1225012354

DR. JOHN B MCCAHAN (M.D.) is a healthcare provider. based in Boston, Massachusetts. specializing in INFECTIOUS DISEASE, PEDIATRIC MEDICINE. They hold the professional credentials M.D.. They hold a License No. 151640 (MA). The NPI Number for DR. JOHN B MCCAHAN (M.D.) is 1225012354

Main info

Male
33 Years Of Experience
Accepts Medicare Assignment
Name
DR. JOHN B MCCAHAN (M.D.)
NPI
1225012354
Phone
(800) 225-8885
Address
PO BOX 415348
Enumeration Date
1 December 2005
Last Update Date
12 March 2025

Doctor Profile

Medical School Name
UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Secondary Phone
5083341000
Graduation Year
1993 (33 years ago)
PAC ID
3476659467
Group Practice PAC ID
4284539891
Professional Enrollment ID
I20070508000601
Address ID
MA016550002WO55XXXNXXX400
Telehealth
Yes

Contacts

Secure Messaging
jmccahan23260@UmassMemorial.direct-ci.com
FHIR Endpoint
https://epicproxy.et0978.epichosted.com/FHIRProxy/api/FHIR/DSTU2/
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience69
Completeness85
Years active:20State licenses:1Other namesUpdated within 12 months

539 INFECTIOUS DISEASE in MA

Loading map...

Provider Addresses for DR. JOHN B MCCAHAN (M.D.)

  • PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States

    BOSTON, MA 022415348

    Phone: (800) 225-8885

    Fax: (508) 334-1977

    Type: Mailing

  • Tavolino, 31;33, East Main Street, Westborough, Worcester County, Massachusetts, 01581, United States

    WESTBOROUGH, MA 015811410

    Phone: (508) 836-4884

    Fax: (508) 836-3351

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2007-05-08

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20070508000601IInfectious DiseaseMATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99214Established patient office or other outpatient visit, 30-39 minutes8868$0
99213Established patient office or other outpatient visit, 20-29 minutes6956$0
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit6464$0
99215Established patient office or other outpatient visit, 40-54 minutes3525$0
G0009Administration of pneumococcal vaccine2929$0
View full utilization report →

Insurance plans in this area (ZIP 02241)

Loading plans...

Provider's Procedures

DR. JOHN B MCCAHAN (M.D.) performs procedures in INFECTIOUS DISEASE. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
INFECTIOUS DISEASEMA90670Pneumococcal vaccine for injection into muscle1515

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 4284539891View full group profile
NameSpecialtyState
Certified Registered Nurse Anesthetist (Crna)MA
-MA
-MA
Family PracticeMA
Physician AssistantMA
Pulmonary Disease, Critical Care (Intensivists), Allergy/ImmunologyMA
-MA
-MA
Internal MedicineMA
Nurse PractitionerMA

Reviews

All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.

No reviews yet. Be the first to share your experience — your opinion helps families compare providers.

Frequently asked questions

Is there an official ID for DR. JOHN B MCCAHAN (M.D.) in U.S. healthcare records?
The official identifier for DR. JOHN B MCCAHAN (M.D.) is NPI 1225012354.
Active or inactive — what applies to DR. JOHN B MCCAHAN (M.D.)?
You should see DR. JOHN B MCCAHAN (M.D.) as active in CMS-hosted NPPES data.
What area of care is associated with DR. JOHN B MCCAHAN (M.D.)?
DR. JOHN B MCCAHAN (M.D.)'s record emphasizes Pediatrics Physician. Clinical services aligned with this taxonomy classification.
What locale is associated with DR. JOHN B MCCAHAN (M.D.)?
Directory geography for DR. JOHN B MCCAHAN (M.D.) centers on Boston, Massachusetts.
When was this NPI issued?
Enumeration for DR. JOHN B MCCAHAN (M.D.) is noted as December 1, 2005 where the registry provides it.

Similar Providers

DR. BARRY GRANT ZALLEN (M.D.)

Pediatrics Physician
130, Draper Road, Tower Hill, Wayland, Middlesex County, Massachusetts, 01778, United States of America
NPI: 1588667539

MARIA A. LAVAIA (MD)

Pediatrics Physician
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
NPI: 1538162094

MATTHEW G MASIELLO (MD)

Pediatrics Physician
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
NPI: 1720083892

DR. MARY JO MCDONELL (MD)

Pediatrics Physician
6937 WILLIAMS RD
NPI: 1821095118

MICHAEL JOHN DONNELLY

Internal Medicine Physician
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
NPI: 1225036296

ETHAN DANIEL HAUSMAN

Pediatrics Physician
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
NPI: 1912906777
40 HOLLAND ST
NPI: 1548268360

DR. TIMOTHY S NAIMI (MD, MPH)

Internal Medicine Physician
637 Washington St
NPI: 1679572291

ANA MARIA CASKIN

Pediatrics Physician
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
NPI: 1205835899