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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. DANIEL M HORN MD
NPI 1780903971
Internal Medicine in Waltham, MA

Active since May 27, 2010PECOS Enrolled
221 CRESCENT ST STE 202, WALTHAM, MA 02453(866) 849-0692 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 26, 2026, Nov 7, 2024, Oct 2, 2024 and 6 more (9 updates tracked since 2018).

About Dr. Daniel M Horn Md NPPES

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

DR. DANIEL M HORN MD (NPI 1780903971) is an individual internal medicine provider in Waltham, Massachusetts, licensed in Massachusetts (251716) and active in the NPI registry since May 2010. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1780903971
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. DANIEL M HORNCredential: MD
Location Address221 CRESCENT ST STE 202Waltham, MA 02453-3425
Mailing AddressPo Box 211699Eagan, MN 55121-3699 · (866) 849-0692
Phone(866) 849-0692
Sole ProprietorNo
Enumeration DateMay 27, 2010
Last NPPES UpdateJune 11, 20269 updates tracked since enumeration
NPPES CertifiedJune 11, 2026
✔ NPI 1780903971 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in MA · 251716✔ Licensed in PA · MD484408✔ Licensed in GA · 100333✔ Licensed in TX · U8885✔ Licensed in CO · DR.0072398✔ Licensed in SC · 91509✔ Licensed in IL · 036.168528✔ Licensed in AL · MD.48112✔ Licensed in HI · MD24268✔ Licensed in OH · 35C.001303✔ Licensed in AZ · 72732✔ Licensed in TN · 70584✔ Licensed in NC · 2024-01822✔ Licensed in FL · ME166617✔ Licensed in OR · MD218918
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
221 CRESCENT ST STE 202, Waltham, MA 02453
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Secondary Practice Locations 2

Location 115 Parkman Street, WAC 612Boston, MA 02114-3117 · Phone (617) 726-2374 · Fax (617) 726-4495
Location 21055 Howell Mill Rd NW Fl 8Atlanta, GA 30318-5557 · Phone (866) 849-0692

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. Daniel M Horn 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 02453 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
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.

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
4 suppliers12 claims26 services$5.84 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
3 suppliers12 claims12 services$45.70 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers13 claims72 services$2.01 avg. paid by Medicare
Continuous positive airway pressure (cpap) device E0601
DME-Other DME · category DE001N
2 suppliers18 claims18 services$18.26 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$68.32 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 12

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

DEVOTED HEALTH INSURANCE COMPANY OF DELAWARE
Health Maintenance Organization
221 CRESCENT ST STE 202
WALTHAM, MA 02453
Middlesex County (617) 958-1611
DEVOTED HEALTH INSURANCE COMPANY OF LOUISIANA
Health Maintenance Organization
221 CRESCENT ST STE 202
WALTHAM, MA 02453
Middlesex County (617) 958-1611
NWANNEKA ANIUNOH
Pharmacist
221 CRESCENT ST STE 202
WALTHAM, MA 02453
Middlesex County (800) 338-6833
BRENDA NAMARA
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
221 CRESCENT ST STE 202
WALTHAM, MA 02453
Middlesex County (800) 990-0723
SHANNON TREVINO NP
Nurse Practitioner
221 CRESCENT ST STE 202
WALTHAM, MA 02453
Middlesex County (866) 849-0692
JENNIFER COLBORN RN
Registered Nurse
221 CRESCENT ST STE 202
WALTHAM, MA 02453
Middlesex County (866) 849-0692
DEVOTED HEALTH INSURANCE COMPANY OF OKLAHOMA
Health Maintenance Organization
221 CRESCENT ST STE 202
WALTHAM, MA 02453
Middlesex County (617) 958-1611
DEVOTED HEALTH INSURANCE COMPANY OF NEBRASKA
Health Maintenance Organization
221 CRESCENT ST STE 202
WALTHAM, MA 02453
Middlesex County (617) 958-1611

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 Daniel Horn's NPI number?

The NPI number for Daniel Horn is 1780903971. It was assigned to this individual provider in the NPPES registry on May 27, 2010.

Where is Daniel Horn located?

Daniel Horn practices at 221 Crescent St Ste 202, Waltham, MA 02453. The listed phone number is (866) 849-0692.

What is Daniel Horn's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Daniel Horn enrolled in Medicare?

Yes. Daniel Horn is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Daniel Horn was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 56 days 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.