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Caitlin Mackenzie Parmer-Chow, MD

Internal Medicine · Stanford

NPI 1902433568

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
4
1 carrier
Office
1
Since medical school
6 years
Yale University School of Medicine, 2020

Offices

1 location · Stanford Health Care · 3,152 clinicians in this group

Looking this up.

Plans that list them

4 plans · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Parmer-Chow’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

Plans whose provider directory lists this clinician
SCAN Balance (HMO C-SNP)SCAN Health PlanListedOct 3, 2026
SCAN Classic (HMO)SCAN Health PlanListedOct 3, 2026
SCAN MyChoice (HMO)SCAN Health PlanListedOct 3, 2026
SCAN Strive (HMO C-SNP)SCAN Health PlanListedOct 3, 2026

California Medical Board record

Licence A186380 · Current

Licensed to practise in California · since 2023 · expires 2027-07-31 · Yale University School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

School, training and certification

What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.

Specialty certification

  • American Board of Internal Medicine - Internal Medicine

Original Medicare doctor bills

$89,418

Medicare paid this office $89,418 for 249 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes160$47,819$106
Initial hospital care with moderate level of medical decision making at least 75 minutes104$15,932$152
Hospital discharge day management, more than 30 minutes118$12,072$102
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes78$10,362$68
Advance care planning, first 30 minutes11$1,020$68

Who their Medicare patients are

249 Original Medicare patients in 2024. Average age 76 · Under 65 13% · 85 and older 27% · Women 49% · Also on Medicaid 43% · Health risk score 3.54. Sicker patients than 9 in 10 peers; the typical internal medicine clinician is at 1.76.

Conditions among them: High blood pressure 75% · Chronic kidney disease 58% · Diabetes 50% · Coronary heart disease 49% · Heart failure 48% · Atrial fibrillation 40% · Dementia 40% · Depression 39% · COPD 26% · Cancer 24% · Stroke 24%.

The office billed $381,368, Medicare allowed $113,211 and paid $89,418; for 860 services of 11 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare by year
2024249860763.54$381,368$89,418
202383237772.76$102,100$24,274

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

See the services billed each year

2023: 4 services

Original Medicare services billed in 2023
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes42$10,462$106
Initial hospital care with moderate level of medical decision making at least 75 minutes29$4,532$156
Hospital discharge day management, more than 30 minutes42$4,395$105
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes34$3,921$71

Medicaid work

$14,391 in 2024

Medicaid paid $14,391 for 356 billed services this clinician did in 2024, up to 20 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

Largest Medicaid services in 2024
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES238$8,584
1ST HOSP IP/OBS HIGH 7547$2,678
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter55$2,490
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES16$639
Medicaid work by year
2024356420$14,391
2023133417$4,354
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES67$1,731
1ST HOSP IP/OBS HIGH 7514$1,238
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter29$853
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES23$532

Drugs they prescribed that Part D paid

$8,254

Pharmacies billed $8,254 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

Opioids were 0% of their Part D prescriptions (0 of 48) in 2024. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

36 generic and fewer than 11 brand-name prescriptions · $8,254 in drug cost.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Year by year

Part D prescribing by year
202448190% (0)None$8,254
202316849NoneNone$28,779
2022203410% (0)None$29,338
202117832NoneNone$36,132
20203115NoneNone$4,965

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 2 drugs

Part D drugs prescribed in 2023
Atorvastatin19$661$35
Rosuvastatin11$244$22

2022: 3 drugs

Part D drugs prescribed in 2022
Gabapentin20$1,076$54
Albuterol Sulfate Hfa15$721$48
Atorvastatin22$209$9

2021: 2 drugs

Part D drugs prescribed in 2021
Levothyroxine11$265$24
Gabapentin20$223$11

Professional record

NPI
1902433568
Licence
CA A186380California A186380: Current · expires 2027-07-31
Trained
Yale University School of Medicine, 2020 · 6 years ago
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Internal medicine (207R00000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2020-03-24
NPI last updated
2024-04-23
NPI record certified
2024-04-23

This is when the NPI record was last certified, not a medical board exam.