Doctor profile · Federal record

Dr. Jennifer de Los Santos, MD

Radiation Oncology Physician (CMS: Radiation Oncology) · Saint Louis, MO

  • NPI 1952344566
  • Accepts Medicare
  • 31 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
4921 Parkview Pl, Dept Radiation Oncology, Ll
Saint Louis, MO 631101032
(314) 747-7236
fax (314) 362-8099
Mailing address
Po Box 7412011
Chicago, IL 606742011

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
April 3, 2026
Year of graduation
1995 — 31 yrs since
Specialty taxonomy
2085R0001X — NUCC code
State license (1)
Missouri #2024004383
Medicaid
MO #200137932

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1952344566. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
932
Distinct HCPCS
10
Medicare allowed
$85,798
HCPCS Description Services Patients Avg allowed
77014 Ct guidance for insertion of radiation therapy fields 163 23 $40
77300 Calculation of radiation therapy dose 127 40 $31
77334 Design and construction of complex radiation treatment device 110 45 $57
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy 109 22 $18
77427 Radiation treatment management, 5 treatment sessions 86 36 $179
99214 Established patient office or other outpatient visit, 30-39 minutes 49 42 $92
99213 Established patient office or other outpatient visit, 20-29 minutes 47 44 $62
77263 Complex radiation therapy planning 45 44 $156
99205 New patient office or other outpatient visit, 60-74 minutes 41 41 $170
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 29 22 $78

In context: peer comparison

Among 21 peers in Saint Louis Radiation Oncology Physician, average services per provider: 80. This provider delivers 12× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$33
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Tactile Systems Technology INC 1 $33.12

By nature of payment

Food and Beverage
$33

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
118
Patients
37
Total drug cost
$2,304
Drug Type Claims Patients Total cost
Gabapentin Generic 60 26 $570
Pentoxifylline Generic 13 0 $702
Oxycodone Hcl Generic 12 0 $171
Fentanyl Generic 11 0 $722
Lorazepam Generic 11 0 $18
Ondansetron Hcl Generic 11 11 $121

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Jennifer de Los Santos's medical specialty?
Dr. Jennifer de Los Santos practices Radiation Oncology Physician in Saint Louis, MO.
Where does Dr. Jennifer de Los Santos practice?
Dr. Jennifer de Los Santos practices at 4921 Parkview Pl, Saint Louis, MO 631101032. Office phone: 3147477236.
What is Dr. Jennifer de Los Santos's NPI?
Dr. Jennifer de Los Santos's National Provider Identifier (NPI) is 1952344566, issued by NPPES.
Does Dr. Jennifer de Los Santos accept Medicare assignment?
Yes. Dr. Jennifer de Los Santos accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jennifer de Los Santos commonly perform?
Top Medicare-reported procedures in 2023: Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Calculation of radiation therapy dose (HCPCS 77300); Design and construction of complex radiation treatment device (HCPCS 77334). Source: CMS Medicare Physician & Other Practitioners file.