Doctor profile · Federal record

Dr. John Leander Po, MD, PHD

Internal Medicine Physician (CMS: Internal Medicine) · Infectious Disease Physician · Infectious Disease Physician · Tucson, AZ

  • NPI 1366638561
  • Accepts Medicare
  • 23 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
3902 E Grant RD
Tucson, AZ 857122558
(520) 468-4801
Additional location
7040 E Golf Links RD
Tucson, AZ 857301000
(520) 200-6709
fax (520) 532-1602
Mailing address
Po Box 245039
Tucson, AZ 857245039

Credentials & registration

NPPES · NUCC
NPI registered
September 2007 — 19 yrs on file
Profile last updated
June 12, 2025
Year of graduation
2003 — 23 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Arizona #37948 · Massachusetts #218627

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1366638561. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
347
Distinct HCPCS
4
Medicare allowed
$38,115
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 240 106 $124
99213 Established patient office or other outpatient visit, 20-29 minutes 82 51 $87
G0008 Administration of influenza virus vaccine 13 13 $30
90662 Influenza vaccine split virus, preservative free 12 12 $72

In context: peer comparison

Among 128 peers in Tucson Internal Medicine Physician, average services per provider: 112. This provider delivers 3.1× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
2,408
Patients
740
Total drug cost
$32,612
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 398 122 $4,017
Levothyroxine Sodium Generic 259 78 $3,336
Amlodipine Besylate Generic 245 68 $1,110
Losartan Potassium Generic 203 71 $2,582
Lisinopril Generic 171 54 $786
Gabapentin Generic 158 54 $4,435
Omeprazole Generic 129 38 $1,552
Tamsulosin Hcl Generic 127 36 $1,631
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 126 38 $6,898
Metformin Hcl Generic 118 36 $900

Frequently asked questions

Auto-generated from federal data
What is Dr. John Leander Po's medical specialty?
Dr. John Leander Po practices Internal Medicine Physician in Tucson, AZ.
Where does Dr. John Leander Po practice?
Dr. John Leander Po practices at 3902 E Grant RD, Tucson, AZ 857122558. Office phone: 5204684801.
What is Dr. John Leander Po's NPI?
Dr. John Leander Po's National Provider Identifier (NPI) is 1366638561, issued by NPPES.
Does Dr. John Leander Po accept Medicare assignment?
Yes. Dr. John Leander Po accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Leander Po commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Administration of influenza virus vaccine (HCPCS G0008). Source: CMS Medicare Physician & Other Practitioners file.