Doctor profile · Federal record

Dr. Javi Hartenstine, D.O.

Anatomic Pathology & Clinical Pathology Physician (CMS: Pathology) · Student in an Organized Health Care Education/Training Program · Pleasanton, CA

  • NPI 1932462413
  • Accepts Medicare
  • 14 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 4 locations .

NPPES Updated May 11, 2026
Primary practice
5555 W Las Positas Blvd
Pleasanton, CA 945884000
(925) 847-3000
Additional location
1800 N California St
Stockton, CA 952046019
(209) 943-2000
Additional location
4301 Northstar Way
Modesto, CA 95356
(209) 577-1200
fax (209) 577-6517
Show 1 more location
Additional location
22 S Greene St, Nbw43
Baltimore, MD 212011544
(410) 328-5525
fax (410) 328-5508

Credentials & registration

NPPES · NUCC
NPI registered
June 2012 — 14 yrs on file
Profile last updated
July 8, 2020
Year of graduation
2012 — 14 yrs since
Specialty taxonomy
207ZP0102X — NUCC code
State license (1)
California #20A14783

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1932462413. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
791
Distinct HCPCS
8
Medicare allowed
$26,676
HCPCS Description Services Patients Avg allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity 285 194 $35
88341 Special stained specimen slides to examine tissue, each additional procedure 191 57 $27
88108 Cell examination of specimen, concentration technique 111 101 $21
88342 Special stained specimen slides to examine tissue, initial procedure 82 68 $33
88307 Pathology examination of tissue using a microscope, moderately high complexity 45 39 $80
88173 Evaluation of fine needle aspirate with interpretation and report 30 18 $68
88304 Pathology examination of tissue using a microscope, moderately low complexity 25 25 $11
85060 Blood smear interpretation by physician with written report 22 20 $23

In context: peer comparison

Among 1 peers in this city , average services per provider: 98. This provider delivers 8.1× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Javi Hartenstine's medical specialty?
Dr. Javi Hartenstine practices Anatomic Pathology & Clinical Pathology Physician in Pleasanton, CA.
Where does Dr. Javi Hartenstine practice?
Dr. Javi Hartenstine practices at 5555 W Las Positas Blvd, Pleasanton, CA 945884000. Office phone: 9258473000.
What is Dr. Javi Hartenstine's NPI?
Dr. Javi Hartenstine's National Provider Identifier (NPI) is 1932462413, issued by NPPES.
Does Dr. Javi Hartenstine accept Medicare assignment?
Yes. Dr. Javi Hartenstine accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Javi Hartenstine commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to examine tissue, each additional procedure (HCPCS 88341); Cell examination of specimen, concentration technique (HCPCS 88108). Source: CMS Medicare Physician & Other Practitioners file.