Doctor profile · Federal record

Dr. William Amess, M.D.

Internal Medicine Physician (CMS: Endocrinology) · Sacramento, CA

  • NPI 1326232794
  • Accepts Medicare
  • 20 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
4860 Y St Ste B0400
Sacramento, CA 958172307
(916) 734-2737

Credentials & registration

NPPES · NUCC
NPI registered
August 2007 — 19 yrs on file
Profile last updated
December 15, 2021
Year of graduation
2006 — 20 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A101329

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1326232794. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
33
Distinct HCPCS
1
Medicare allowed
$333
HCPCS Description Services Patients Avg allowed
77080 Dxa bone density measurement of hip, pelvis, spine 33 33 $10

In context: peer comparison

Among 123 peers in this city , average services per provider: 116. This provider delivers 0.3× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,420
Patients
510
Total drug cost
$162,877
Drug Type Claims Patients Total cost
Methimazole Generic 349 111 $5,375
Levothyroxine Sodium Generic 347 111 $8,247
Cinacalcet Hcl Generic 141 27 $4,921
Hydrocortisone Generic 126 39 $13,726
Baqsimi (Glucagon) Brand 77 50 $46,868
Humalog (Insulin Lispro) Brand 67 32 $30,090
Insulin Glargine-Yfgn Generic 54 37 $6,669
Humalog Kwikpen U-100 (Insulin Lispro) Brand 52 21 $22,688
Alendronate Sodium Generic 42 18 $455
Lantus (Insulin Glargine,hum.Rec.Anlog) Brand 35 25 $9,417

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. William Amess's medical specialty?
Dr. William Amess practices Internal Medicine Physician in Sacramento, CA.
Where does Dr. William Amess practice?
Dr. William Amess practices at 4860 Y St Ste B0400, Sacramento, CA 958172307. Office phone: 9167342737.
What is Dr. William Amess's NPI?
Dr. William Amess's National Provider Identifier (NPI) is 1326232794, issued by NPPES.
Does Dr. William Amess accept Medicare assignment?
Yes. Dr. William Amess accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Amess commonly perform?
Top Medicare-reported procedures in 2023: Dxa bone density measurement of hip, pelvis, spine (HCPCS 77080). Source: CMS Medicare Physician & Other Practitioners file.