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DR. KARL CHRISTIAN SANTIAGO MD
NPI 1033641287
Pediatrics in Boston, MA

Active since March 28, 2017PECOS Enrolled
300 LONGWOOD AVE, BOSTON, MA 02115(617) 355-6000 Get Directions Write a Review

NPPES record last updated: May 12, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 12, 2025, Feb 11, 2025, Jan 7, 2025 and 3 more (6 updates tracked since 2017).

About Dr. Karl Christian Santiago Md NPPES

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

DR. KARL CHRISTIAN SANTIAGO MD (NPI 1033641287) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (1023807) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1033641287
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. KARL CHRISTIAN SANTIAGOCredential: MD
Location Address300 LONGWOOD AVEBoston, MA 02115-5724
Mailing Address300 Longwood AveBoston, MA 02115-5724 · (617) 355-6000
Phone(617) 355-6000
Sole ProprietorNo
Enumeration DateMarch 28, 2017
Last NPPES UpdateMay 12, 20256 updates tracked since enumeration
NPPES CertifiedMay 12, 2025
✔ NPI 1033641287 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in MA · 1023807✔ Licensed in ME · MD24103
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
300 LONGWOOD AVE, Boston, MA 02115
Open in Google Maps ↗

Secondary Practice Locations 3

Location 115 Anchor Dr Ste 103Rockport, ME 04856-3847 · Phone (207) 301-5600 · Fax (207) 301-5360
Location 29 Fahy StBelfast, ME 04915-6028 · Phone (207) 505-3600 · Fax (207) 553-8364
Location 375 Bickford StJamaica Plain, MA 02130-1401 · Phone (617) 971-2100

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Karl Christian Santiago Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
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 20

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

JULIE ANN HANSEN LCSW
Social Worker (Clinical)
300 LONGWOOD AVE
BOSTON, MA 02115
Suffolk County (857) 218-4309
MS. ANNA ROGLIERI
Nurse Practitioner (Psychiatric/Mental Health)
300 LONGWOOD AVE
BOSTON, MA 02115
Suffolk County (617) 355-6000
STEPHEN G. FLYNN M.D.
Anesthesiology (Pediatric Anesthesiology)
300 LONGWOOD AVE
BOSTON, MA 02115
Suffolk County (617) 355-6000
MISS LAUREN ASHLEY MASTERSON P.T., D.P.T
Physical Therapist
300 LONGWOOD AVE
BOSTON, MA 02115
Suffolk County (617) 355-7216
MS. SOYUN KWAN LICSW
Social Worker (Clinical)
300 LONGWOOD AVE, CHILDREN'S HOSPITAL BOSTON
BOSTON, MA 02115
Suffolk County (617) 355-0567
PUJA BANKA M.D.
Pediatrics
300 LONGWOOD AVE, BADER 203
BOSTON, MA 02115
Suffolk County (617) 355-6363
MR. COURTNEY SULLIVAN FRATTO CPNP
Nurse Practitioner (Pediatrics)
300 LONGWOOD AVE, HUNNEWELL BUILDING 322
BOSTON, MA 02115
Suffolk County (857) 218-4085
DR. ELIZABETH S TAGLAUER M.D., PH.D.
Pediatrics (Neonatal-Perinatal Medicine)
300 LONGWOOD AVE
BOSTON, MA 02115
Suffolk County (617) 355-6000

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 Karl Santiago's NPI number?

The NPI number for Karl Santiago is 1033641287. It was assigned to this individual provider in the NPPES registry on March 28, 2017.

Where is Karl Santiago located?

Karl Santiago practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.

What is Karl Santiago's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Karl Santiago enrolled in Medicare?

Yes. Karl Santiago is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Karl Santiago was last updated on May 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.