Doctor profile · Federal record

Dr. Lori Muffly, M.D.

Hematology (Internal Medicine) Physician (CMS: Hematopoietic Cell Transplantation and Cellular Therapy) · Internal Medicine Physician · Hematology & Oncology Physician · Hematology & Oncology Physician · Medical Oncology Physician · Medical Oncology Physician · Stanford, CA

  • NPI 1427256254
  • Accepts Medicare
  • MIPS 75.5 / 100 · 2023
  • 19 yrs in practice
  • Licensed in 3 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
300 Pasteur Dr
Stanford, CA 943052200
(650) 723-4000
Additional location
1804 Embarcadero RD, Mc: 5548
Palo Alto, CA 943033341

Credentials & registration

NPPES · NUCC
NPI registered
July 2007 — 19 yrs on file
Profile last updated
April 15, 2024
Year of graduation
2007 — 19 yrs since
Specialty taxonomy
207RH0000X — NUCC code
State licenses (4)
California #A132153 · New Hampshire #RT1744 · Colorado #DR.0052339 · Colorado #52339
Medicaid
CO #94573255

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1427256254. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
379
Distinct HCPCS
3
Medicare allowed
$57,426
HCPCS Description Services Patients Avg allowed
99215 Established patient office or other outpatient visit, 40-54 minutes 190 56 $166
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 177 24 $137
99239 Hospital discharge day management, more than 30 minutes 12 11 $134

In context: peer comparison

Among 12 peers in Stanford Hematology (Internal Medicine) Physician, average services per provider: 87. This provider delivers 4.4× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$7,788
Transactions
13
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
National Marrow Donor Program 8 $2,588.44
Incyte Corporation 1 $2,397.50
Medexus Pharma, INC. 1 $2,040.00
Pfizer INC. 2 $691.92
Kite Pharma, INC. 1 $70.47

By nature of payment

Consulting Fee
$4,438
Food and Beverage
$1,967
Travel and Lodging
$699
Compensation for Services Other Than Consulting, Including Serving As Faculty or As A Speaker at A Venue Other Than A Continuing Education Program
$630
Gift
$55

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
279
Patients
36
Total drug cost
$722,590
Drug Type Claims Patients Total cost
Acyclovir Generic 110 23 $2,768
Jakafi (Ruxolitinib Phosphate) Brand 60 13 $717,249
Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) Brand 25 0 $179
Prednisone Generic 22 0 $245
Tacrolimus Generic 21 0 $1,027
Hydrocortisone Generic 15 0 $486
Dexamethasone Generic 13 0 $501
Gabapentin Generic 13 0 $134

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Lori Muffly's medical specialty?
Dr. Lori Muffly practices Hematology (Internal Medicine) Physician in Stanford, CA.
Where does Dr. Lori Muffly practice?
Dr. Lori Muffly practices at 300 Pasteur Dr, Stanford, CA 943052200. Office phone: 6507234000.
What is Dr. Lori Muffly's NPI?
Dr. Lori Muffly's National Provider Identifier (NPI) is 1427256254, issued by NPPES.
Does Dr. Lori Muffly accept Medicare assignment?
Yes. Dr. Lori Muffly accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lori Muffly commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.