Doctor profile · Federal record

Dr. Nathaniel Defelice, M.D.

Critical Care Medicine (Internal Medicine) Physician (CMS: Infectious Disease) · Internal Medicine Physician · Infectious Disease Physician · Sacramento, CA

  • NPI 1366761496
  • Accepts Medicare
  • 16 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1508 Alhambra Blvd Ste 200
Sacramento, CA 958166510
(916) 679-3590
fax (916) 482-3647
Mailing address
1300 Ethan Way Ste 600
Sacramento, CA 958252296

Credentials & registration

NPPES · NUCC
NPI registered
May 2010 — 16 yrs on file
Profile last updated
October 19, 2020
Year of graduation
2010 — 16 yrs since
Specialty taxonomy
207RC0200X — NUCC code
State licenses (2)
California #A129005 · California #129005

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1366761496. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
432
Distinct HCPCS
5
Medicare allowed
$69,808
HCPCS Description Services Patients Avg allowed
99291 Critical care, first 30-74 minutes 179 118 $219
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 148 86 $124
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 56 45 $82
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 27 26 $135
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 22 21 $180

In context: peer comparison

Among 15 peers in this city , average services per provider: 75. This provider delivers 5.8× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Nathaniel Defelice's medical specialty?
Dr. Nathaniel Defelice practices Critical Care Medicine (Internal Medicine) Physician in Sacramento, CA.
Where does Dr. Nathaniel Defelice practice?
Dr. Nathaniel Defelice practices at 1508 Alhambra Blvd Ste 200, Sacramento, CA 958166510. Office phone: 9166793590.
What is Dr. Nathaniel Defelice's NPI?
Dr. Nathaniel Defelice's National Provider Identifier (NPI) is 1366761496, issued by NPPES.
Does Dr. Nathaniel Defelice accept Medicare assignment?
Yes. Dr. Nathaniel Defelice accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nathaniel Defelice commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.