Doctor profile · Federal record

Dr. Stefan Klein, M.D.

Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Orthopaedic Hand Surgery Physician · Santa Cruz, CA

  • NPI 1871664003
  • Accepts Medicare
  • MIPS 0.0 / 100 · 2023
  • 35 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
3143 Paul Sweet RD
Santa Cruz, CA 950651521
(831) 462-4801
fax (831) 462-4756
Mailing address
Po Box 2139
Aptos, CA 950012139

Credentials & registration

NPPES · NUCC
NPI registered
November 2006 — 20 yrs on file
Profile last updated
January 24, 2020
Year of graduation
1991 — 35 yrs since
Specialty taxonomy
207X00000X — NUCC code
State license (1)
California #G75514
Medicaid
CA #00G755140

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1871664003. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,249
Distinct HCPCS
10
Medicare allowed
$198,895
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 625 348 $98
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg 388 261 $1
99203 New patient office or other outpatient visit, 30-44 minutes 243 243 $121
76000 Imaging guidance for procedure, 60 minutes or less 225 177 $50
20550 Injection into tendon or ligament 197 151 $63
99214 Established patient office or other outpatient visit, 30-39 minutes 121 109 $138
20605 Aspiration and/or injection of fluid from medium joint 99 70 $60
26145 Repair of tendon, finger, and/or palm of hand 75 20 $283
64450 Injection of anesthetic agent and/or steroid into other nerve or branch 65 62 $22
20526 Injection of carpal tunnel 34 29 $90

In context: peer comparison

Among 1 peers in Santa Cruz Orthopaedic Surgery Physician, average services per provider: 118. This provider delivers 19× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$108
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Pacira Pharmaceuticals Incorporated 1 $66.53
Ethicon US, LLC 1 $41.10

By nature of payment

Food and Beverage
$108

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
45
Patients
42
Total drug cost
$309
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 24 21 $242
Tramadol Hcl Generic 21 21 $68

Frequently asked questions

Auto-generated from federal data
What is Dr. Stefan Klein's medical specialty?
Dr. Stefan Klein practices Orthopaedic Surgery Physician in Santa Cruz, CA.
Where does Dr. Stefan Klein practice?
Dr. Stefan Klein practices at 3143 Paul Sweet RD, Santa Cruz, CA 950651521. Office phone: 8314624801.
What is Dr. Stefan Klein's NPI?
Dr. Stefan Klein's National Provider Identifier (NPI) is 1871664003, issued by NPPES.
Does Dr. Stefan Klein accept Medicare assignment?
Yes. Dr. Stefan Klein accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stefan Klein commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.