Doctor profile · Federal record

Dr. Kathleen Chak

Internal Medicine Physician (CMS: Internal Medicine) · Geriatric Medicine (Internal Medicine) Physician · Pismo Beach, CA

  • NPI 1356754659
  • Accepts Medicare
  • 12 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
877 Oak Park Blvd
Pismo Beach, CA 934493292
(805) 474-8450
fax (805) 474-8454

Credentials & registration

NPPES · NUCC
NPI registered
June 2014 — 12 yrs on file
Profile last updated
November 2, 2023
Year of graduation
2014 — 12 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #20A14324

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1356754659. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,925
Distinct HCPCS
10
Medicare allowed
$365,752
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 1,406 624 $132
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 351 351 $134
99215 Established patient office or other outpatient visit, 40-54 minutes 179 124 $184
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 163 163 $279
G0009 Administration of pneumococcal vaccine 163 163 $32
99203 New patient office or other outpatient visit, 30-44 minutes 117 117 $116
69209 Removal of impacted ear wax by washing 85 80 $17
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 75 69 $15
99213 Established patient office or other outpatient visit, 20-29 minutes 50 50 $94
17003 Destruction of precancer skin growth, 2-14 growths 45 14 $7

In context: peer comparison

Among 2 peers in Pismo Beach Internal Medicine Physician, average services per provider: 99. This provider delivers 30× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$145
Transactions
7
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Pfizer INC. 5 $97.26
GlaxoSmithKline, LLC. 2 $47.66

By nature of payment

Food and Beverage
$145

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,773
Patients
1,206
Total drug cost
$58,080
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 496 152 $6,560
Rosuvastatin Calcium Generic 482 162 $9,389
Levothyroxine Sodium Generic 452 131 $8,494
Amlodipine Besylate Generic 433 137 $3,971
Losartan Potassium Generic 295 83 $4,259
Lisinopril Generic 252 72 $2,930
Hydrochlorothiazide Generic 249 84 $2,315
Alendronate Sodium Generic 177 61 $4,657
Gabapentin Generic 175 53 $3,246
Omeprazole Generic 143 52 $1,994

Frequently asked questions

Auto-generated from federal data
What is Dr. Kathleen Chak's medical specialty?
Dr. Kathleen Chak practices Internal Medicine Physician in Pismo Beach, CA.
Where does Dr. Kathleen Chak practice?
Dr. Kathleen Chak practices at 877 Oak Park Blvd, Pismo Beach, CA 934493292. Office phone: 8054748450.
What is Dr. Kathleen Chak's NPI?
Dr. Kathleen Chak's National Provider Identifier (NPI) is 1356754659, issued by NPPES.
Does Dr. Kathleen Chak accept Medicare assignment?
Yes. Dr. Kathleen Chak accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kathleen Chak commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.