Doctor profile · Federal record

Dr. Ian Dziewietin, PA-C

Physician Assistant · Worcester, MA

  • NPI 1104463637
  • MIPS 89.0 / 100 · 2023
  • 7 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
55 Lake Ave N
Worcester, MA 016550002
(508) 421-1400
fax (508) 421-1490
Mailing address
Po Box 415348
Boston, MA 022415348

Credentials & registration

NPPES · NUCC
NPI registered
December 2019 — 7 yrs on file
Profile last updated
April 1, 2021
Specialty taxonomy
363A00000X — NUCC code
State license (1)
Massachusetts #PA7940

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1104463637. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
279
Distinct HCPCS
5
Medicare allowed
$27,926
HCPCS Description Services Patients Avg allowed
99284 Emergency department visit with moderate level of medical decision making 83 83 $105
99285 Emergency department visit with high level of medical decision making 74 74 $151
99213 Established patient office or other outpatient visit, 20-29 minutes 49 49 $57
99283 Emergency department visit with low level of medical decision making 41 41 $63
99214 Established patient office or other outpatient visit, 30-39 minutes 32 31 $84

In context: peer comparison

Among 112 peers in Worcester Physician Assistant, average services per provider: 87. This provider delivers 3.2× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
84
Patients
83
Total drug cost
$1,251
Drug Type Claims Patients Total cost
Cephalexin Generic 24 23 $189
Cefpodoxime Proxetil Generic 19 19 $789
Prednisone Generic 16 16 $42
Naproxen Generic 14 14 $83
Doxycycline Monohydrate Generic 11 11 $150

Frequently asked questions

Auto-generated from federal data
What is Dr. Ian Dziewietin's medical specialty?
Dr. Ian Dziewietin practices Physician Assistant in Worcester, MA.
Where does Dr. Ian Dziewietin practice?
Dr. Ian Dziewietin practices at 55 Lake Ave N, Worcester, MA 016550002. Office phone: 5084211400.
What is Dr. Ian Dziewietin's NPI?
Dr. Ian Dziewietin's National Provider Identifier (NPI) is 1104463637, issued by NPPES.
What procedures does Dr. Ian Dziewietin commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.