Doctor profile · Federal record

Dr. Allen Sy, MD

Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · Student in an Organized Health Care Education/Training Program · Renton, WA

  • NPI 1033615380
  • Accepts Medicare
  • 8 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
400 S 43Rd St
Renton, WA 980555714
(425) 228-3440
fax (425) 656-4214
Additional location
1959 Ne Pacific St
Seattle, WA 981950001
(206) 543-3605
Additional location
4245 Roosevelt Way Ne
Seattle, WA 98105
(206) 598-8750
Mailing address
3600 Lind Ave Sw, Suite 100 Attn Credentialing
Renton, WA 980574970

Credentials & registration

NPPES · NUCC
NPI registered
April 2018 — 8 yrs on file
Profile last updated
August 30, 2021
Year of graduation
2018 — 8 yrs since
Specialty taxonomy
208M00000X — NUCC code
State license (1)
Washington #MD61087376

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1033615380. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
789
Distinct HCPCS
6
Medicare allowed
$76,404
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 328 132 $76
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 216 95 $113
99239 Hospital discharge day management, more than 30 minutes 120 119 $112
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 57 19 $49
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 47 45 $171
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 21 21 $130

In context: peer comparison

Among 18 peers in this city , average services per provider: 123. This provider delivers 6.4× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
32
Patients
32
Total drug cost
$196
Drug Type Claims Patients Total cost
Oxycodone Hcl Generic 19 19 $98
Furosemide Generic 13 13 $98

Frequently asked questions

Auto-generated from federal data
What is Dr. Allen Sy's medical specialty?
Dr. Allen Sy practices Hospitalist Physician in Renton, WA.
Where does Dr. Allen Sy practice?
Dr. Allen Sy practices at 400 S 43Rd St, Renton, WA 980555714. Office phone: 4252283440.
What is Dr. Allen Sy's NPI?
Dr. Allen Sy's National Provider Identifier (NPI) is 1033615380, issued by NPPES.
Does Dr. Allen Sy accept Medicare assignment?
Yes. Dr. Allen Sy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Allen Sy commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.