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DR. CHARLES T PU MD
NPI 1508856691
Internal Medicine - Geriatric Medicine in Boston, MA

Active since October 28, 2005PECOS EnrolledAccepts Medicare Assignment
100 CHARLES RIVER PLAZA, SUITE 501 CPZ 502, BOSTON, MA 02114(617) 726-2066(617) 228-6306 Get Directions Write a Review

NPPES record last updated: July 19, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Charles T Pu Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHARLES T PU MD (NPI 1508856691) is an individual geriatric medicine provider in Boston, Massachusetts, licensed in Massachusetts (73771) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Rutgers New Jersey Medical School (1989).

NPPES Registry Identity

NPI1508856691
Entity TypeIndividualMale
Primary Taxonomy207RG0300X
Provider Legal NameDR. CHARLES T PUCredential: MD
Location Address100 CHARLES RIVER PLAZA, SUITE 501 CPZ 502Boston, MA 02114-2723
Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 726-2066 · Fax (617) 228-6306
Phone(617) 726-2066
Fax(617) 228-6306
Sole ProprietorNo
Medical School CMSRutgers New Jersey Medical SchoolGraduated 1989
Enumeration DateOctober 28, 2005
Last NPPES UpdateJuly 19, 2012
✔ NPI 1508856691 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in MA · 73771
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedInternal MedicineTaxonomy 207R00000X · License 73771 (MA)
100 CHARLES RIVER PLAZA, Boston, MA 02114
Open in Google Maps ↗

Other Identifiers 5

OtherJ11653MA · Bcbs Ma
Medicare UPINF00505
Medicare ID-Type UnspecifiedJ11653MA
Medicaid3099466MA
Other073771MA · Tufts Health Plan

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Charles T Pu Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8820086291
PECOS Enrollment IDI20040504000985
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Charles Pu reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The General Hospital Corporation
0.2 mi
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000
Massachusetts General Physicians Organization Inc
0.2 mi
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287
The Commonwealth Of Massachusetts
19 mi
Long Term Care Hospital
365 EAST STREET
Tewksbury, MA 01876
  • Reassigned Medicare billing, Massachusetts enrollment
  • 97 clinicians in this Medicare group
NPI 1871680496 (978) 851-7321

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
73 services18 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
18 services15 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. LISA MILLER O'CONNOR N.P.
Nurse Practitioner (Adult Health)
100 CHARLES RIVER PLAZA, SUITE 403
BOSTON, MA 02114
Suffolk County (617) 726-3373
DR. SPENCER VANB WILKING MD
Internal Medicine
100 CHARLES RIVER PLAZA, STE 501 CPZ 100-5
BOSTON, MA 02114
Suffolk County (617) 726-2066
DR. UDO HOFFMANN MD
Radiology (Diagnostic Radiology)
100 CHARLES RIVER PLAZA, CPZ 4 CPZ 400 RADIOLOGICAL ASSOCIATES
BOSTON, MA 02114
Suffolk County (617) 726-1255
LESLIE BURTON NP
Nurse Practitioner
100 CHARLES RIVER PLAZA, SUITE 502 MGH SENIOR HEALTH
BOSTON, MA 02114
Suffolk County (617) 726-4603

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Charles Pu's NPI number?

The NPI number for Charles Pu is 1508856691. It was assigned to this individual provider in the NPPES registry on October 28, 2005.

Where is Charles Pu located?

Charles Pu practices at 100 Charles River Plaza Suite 501 Cpz 502, Boston, MA 02114. The listed phone number is (617) 726-2066.

What is Charles Pu's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Charles Pu enrolled in Medicare?

Yes. Charles Pu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Charles Pu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charles Pu reassigns Medicare benefits to 3 organizations: The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA) and The Commonwealth Of Massachusetts (Tewksbury, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Charles Pu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Charles Pu accept?

Health plans from Taro Health list Charles Pu as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Charles Pu affiliated with any hospitals?

According to CMS data, Charles Pu is affiliated with Massachusetts General Hospital.

When was this NPI record last updated?

The NPPES record for Charles Pu was last updated on July 19, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.