Doctor profile · Federal record

Dr. Samuel Day, MD, PHD

Radiation Oncology Physician (CMS: Radiation Oncology) · Tucson, AZ

  • NPI 1811304652
  • Accepts Medicare
  • 12 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
3700 E Fort Lowell RD Ste 130
Tucson, AZ 857161729
(520) 881-0631
fax (520) 526-1773
Additional location
121 W Esperanza Blvd Ste 181
Green Valley, AZ 856142622
(520) 689-6992
fax (520) 230-3310
Mailing address
3945 E Paradise Falls Dr Ste 201
Tucson, AZ 857126687

Credentials & registration

NPPES · NUCC
NPI registered
July 2014 — 12 yrs on file
Profile last updated
August 11, 2022
Year of graduation
2014 — 12 yrs since
Specialty taxonomy
2085R0001X — NUCC code
State license (1)
Arizona #58485

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1811304652. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
15,884
Distinct HCPCS
10
Medicare allowed
$1,692,586
HCPCS Description Services Patients Avg allowed
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml 10,730 97 $0
77014 Ct guidance for insertion of radiation therapy fields 1,122 124 $117
G6015 Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session 1,075 112 $346
77300 Calculation of radiation therapy dose 345 88 $64
77336 Continuing radiation therapy consultation per week 251 88 $83
77427 Radiation treatment management, 5 treatment sessions 235 77 $186
A9595 Piflufolastat f-18, diagnostic, 1 millicurie 234 25 $590
77373 Cranial lesion surgery using radiation over multiple sessions 187 60 $965
77334 Design and construction of complex radiation treatment device 172 88 $121
78815 Nuclear medicine study from skull base to mid-thigh with ct scan 170 153 $1,506

In context: peer comparison

Among 9 peers in Tucson Radiation Oncology Physician, average services per provider: 202. This provider delivers 79× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$871
Transactions
35
Manufacturers
15
Payer (manufacturer) Industry Txns Amount
Merck Sharp & Dohme LLC 7 $165.78
Regeneron Healthcare Solutions, INC. 3 $103.24
Novartis Pharmaceuticals Corporation 3 $93.01
Pfizer INC. 4 $75.77
AstraZeneca Pharmaceuticals Lp 4 $60.00
Telix Pharmaceuticals 1 $46.81
Daiichi Sankyo INC. 2 $40.76
Sumitomo Pharma America, INC. 2 $38.92
Bayer Healthcare Pharmaceuticals INC. 2 $37.48
Janssen Biotech, INC. 2 $31.36
BeiGene USA, INC. 1 $27.60
Fresenius Kabi USA, LLC 1 $26.47
Jazz Pharmaceuticals INC. 1 $25.13
Abbvie INC. 1 $24.85
Progenics Pharmaceuticals, INC. 1 $23.69

By nature of payment

Food and Beverage
$871

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
83
Patients
63
Total drug cost
$1,204
Drug Type Claims Patients Total cost
Tamsulosin Hcl Generic 26 14 $494
Ciprofloxacin Hcl Generic 25 24 $81
Dexamethasone Generic 17 12 $224
Lidocaine Hcl Viscous (Lidocaine Hcl) Brand 15 13 $405

Frequently asked questions

Auto-generated from federal data
What is Dr. Samuel Day's medical specialty?
Dr. Samuel Day practices Radiation Oncology Physician in Tucson, AZ.
Where does Dr. Samuel Day practice?
Dr. Samuel Day practices at 3700 E Fort Lowell RD Ste 130, Tucson, AZ 857161729. Office phone: 5208810631.
What is Dr. Samuel Day's NPI?
Dr. Samuel Day's National Provider Identifier (NPI) is 1811304652, issued by NPPES.
Does Dr. Samuel Day accept Medicare assignment?
Yes. Dr. Samuel Day accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Samuel Day commonly perform?
Top Medicare-reported procedures in 2023: Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (HCPCS Q9967); Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc (HCPCS G6015). Source: CMS Medicare Physician & Other Practitioners file.