Dr. Karen A. Kovalow-St. John, MD

  • San Luis Obispo, CA
  • Rheumatologist
NPI1336146281PAC ID4284606690
Medicare services, 2024
107,382
Medicare patients, 2024
536
Part D claims, 2024
1,406
MIPS score, 2024
84
Hospital affiliations
4
Practice address
77 Casa St Ste 106, San Luis Obispo, CA 93405
Practice phone
Call (805) 541-1021
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Endoscopy Center of the Central Coast

Surgery Center - Medicare-Certified · San Luis Obispo, California

See all 7 affiliations

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Dr. Karen A. Kovalow-St. John is a rheumatologist in San Luis Obispo, California

Dr. Kovalow-St. John practices at Endoscopy Center of the Central Coast in San Luis Obispo, California.

Dr. Kovalow-St. John's NPI, 1336146281, was assigned on July 7, 2005. Dr. Kovalow-St. John graduated from Indiana University School Of Medicine in 1983. Dr. Kovalow-St. John's Indiana license number on file is 01037613A.

NPI and contact details
Medicare PAC ID
4284606690
NPI enumeration date
July 7, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(805) 541-1021
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
69
Medical school graduation
1983

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Karen A. Kovalow-St. John practices at Endoscopy Center of the Central Coast in San Luis Obispo, California

Dr. Kovalow-St. John's primary practice is Endoscopy Center of the Central Coast, at 77 Casa St Ste 106, San Luis Obispo, CA 93405. The practice phone is (805) 541-1021.

  • Endoscopy Center of the Central Coast
    77 Casa St Ste 106, San Luis Obispo, CA 93405Phone(805) 541-1021

Source: Dmand AI Affiliation Data

Dr. Karen A. Kovalow-St. John is affiliated with 6 sites of care and 1 medical group

Dr. Kovalow-St. John's primary practice is Endoscopy Center of the Central Coast in San Luis Obispo, California. Dr. Kovalow-St. John is also affiliated with Dignity Health - French Hospital Medical Center. The medical group on file is Rheumatology Services Medical Group. Dmand AI also links Dr. Kovalow-St. John to 3 more hospitals and 1 group practice or clinic, each named with a free account.

See all 7 affiliations for Dr. Kovalow-St. John

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Karen A. Kovalow-St. John's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kovalow-St. John practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Endoscopy Center of the Central CoastAvailable with a free account
+5 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Karen A. Kovalow-St. John is one of 821 rheumatologists in California

Rheumatology is Dr. Kovalow-St. John's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Kovalow-St. John is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Kovalow-St. John's licenses on file in 2 states: Indiana and California.

Specialties and state licenses

  • Rheumatology, IndianaPrimaryLicense 01037613A · 1989 to 2025 · taxonomy 207RR0500X
  • California license2020 to 2026

Clinical focus

Dmand AI lists arteritis, arthritis, gout, joint arthropathy, joint pain, lupus, lyme disease and muscle pain, fibromyalgia, and limb pain among the conditions Dr. Kovalow-St. John treats.

Rheumatologists near Dr. Kovalow-St. John

Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.

821rheumatologists in California
3rheumatologists in San Luis Obispo

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Karen A. Kovalow-St. John billed Medicare for 107,382 services in 2024

CMS data shows 107,382 Medicare services from Dr. Kovalow-St. John across 17 procedure codes in 2024, for 536 Medicare patients. Medicare paid $1,383,594 for them. Every service was in an office.

Medicare services, 2024107,382
Medicare patients536
Paid by Medicare$1.4M
Procedure codes17

Dr. Kovalow-St. John's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Drugs given in the office
2023: 74,6672024: 105,64441%
Tests and treatments
2023: 9792024: 1,11714%
Office and hospital visits
2023: 6892024: 62110%

Dr. Kovalow-St. John compared with the California median for rheumatologists, 2024

  • Dr. Kovalow-St. John
  • California median
Medicare services
107,382vs 900119.3 times
Medicare patients
536vs 2162.5 times
Part D claims
1,320vs 96237% above

Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.

Dr. Kovalow-St. John's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Kovalow-St. John

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Kovalow-St. John and other rheumatologists in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Karen A. Kovalow-St. John treated 536 Medicare patients in 2024, average age 74

CMS counts 536 Medicare patients who saw Dr. Kovalow-St. John in 2024. The largest group is 65 to 74, with 252 patients. 75% of them have arthritis, and 73% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Kovalow-St. John's median patient age at 69, with 81% women.

Medicare patients, 2024536
Average age74
Average risk score1.08
Also on Medicaid14%

Dr. Kovalow-St. John's Medicare patients by age, 2024

Dr. Kovalow-St. John's Medicare patients by sex, 2024

  • Women44884%
  • Men8816%

Chronic conditions among Dr. Kovalow-St. John's Medicare patients, 2024

  1. Arthritis75%
  2. High cholesterol73%
  3. High blood pressure60%
  4. Osteoporosis60%
  5. Mood disorders25%
  6. Anxiety24%
  7. Depression23%
  8. Chronic kidney disease17%

Share of Medicare patients with each condition. A patient can have several.

Dr. Kovalow-St. John's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 69

Patient panel by sex, all payers

  • Women81%
  • Men18%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Karen A. Kovalow-St. John wrote 1,406 Medicare Part D claims in 2024

In 2024, Dr. Kovalow-St. John wrote 1,406 Medicare Part D claims for 213 patients. 88% of them were for generic drugs. CMS names the drug for 1,320 of them, across 23 drugs with 11 or more claims each, at $888,528 in total drug cost. In 2023, CMS named 1,142 claims across 19 drugs.

Part D claims, 20241,406
Drugs named by CMS23
Total drug cost$888,528
Part D patients213

Dr. Kovalow-St. John's Part D claims by kind of drug, 2024

  • Generic1,236 claims88%
  • Brand-name157 claims11%
  • Other13 claims1%

Dr. Kovalow-St. John's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Kovalow-St. John's Part D claims, 2024

  • Antibiotics1%13 of 1,406 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,1422024: 1,32016%

Drugs named by CMS: 23 in 2024, 19 in 2023.

See all prescribing by Dr. Kovalow-St. John

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Karen A. Kovalow-St. John scored 84 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Kovalow-St. John for performance year 2024, reported as part of a group. Dr. Kovalow-St. John accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Kovalow-St. John as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Kovalow-St. John's MIPS scores, performance year 2024

  • 84of 100Final score
  • 70.7of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 68of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

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Dr. Karen A. Kovalow-St. John received $23,708 in industry payments from 2016 to 2025

CMS Open Payments shows 1,167 general payments to Dr. Kovalow-St. John from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Janssen Pharmaceuticals, Inc paid the most, $4,211.

General payments to Dr. Kovalow-St. John by program year, 2016 to 2025

General payments to Dr. Kovalow-St. John by kind, 2016 to 2025

$23.7Kin total
  • Food and beverage$22,03793%
  • Travel and lodging$1,2265%
  • Education$4452%

Companies that paid Dr. Kovalow-St. John the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Kovalow-St. John

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Karen A. Kovalow-St. John has 1 award and honors on record

Dmand AI lists 1 award for Dr. Kovalow-St. John, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Kovalow-St. John

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Karen A. Kovalow-St. John graduated from Indiana University School Of Medicine

Dr. Kovalow-St. John graduated from Indiana University School Of Medicine in 1983.

  1. Medical schoolIndiana University School Of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine
  3. Board certified in rheumatologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Karen A. Kovalow-St. John accepts plans from 9 insurance carriers

Dr. Kovalow-St. John is in network with 9 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Elevance
  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • Alliant Health Plans
  • +1 more carriersWith a free account

Plan types Dr. Kovalow-St. John accepts, by number of carriers

  1. Medicare7
  2. PPO7
  3. HMO5
  4. POS4
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. Karen A. Kovalow-St. John's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Karen A. Kovalow-St. John

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Karen A. Kovalow-St. John's NPI number?

Dr. Karen A. Kovalow-St. John's NPI number is 1336146281. It was assigned on July 7, 2005, and it is active in the NPI Registry.

What kind of doctor is Dr. Karen A. Kovalow-St. John?

Dr. Karen A. Kovalow-St. John is a rheumatologist in San Luis Obispo, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).

Where does Dr. Karen A. Kovalow-St. John practice?

Dr. Kovalow-St. John practices at 77 Casa St Ste 106, San Luis Obispo, CA 93405. Dr. Kovalow-St. John's primary practice is Endoscopy Center of the Central Coast in San Luis Obispo, California. Dmand AI also links Dr. Kovalow-St. John to 3 hospitals and 1 group practice or clinic.

What is Dr. Karen A. Kovalow-St. John's office phone number?

The practice phone on file for Dr. Kovalow-St. John is (805) 541-1021.

What is Dr. Karen A. Kovalow-St. John's medical license number?

Dr. Kovalow-St. John's Indiana license number on file is 01037613A, one of the licenses on file in 2 states.

Which states has Dr. Karen A. Kovalow-St. John been licensed in?

Dmand AI has state licenses on file for Dr. Kovalow-St. John in Indiana (1989 to 2025) and California (2020 to 2026).

Which hospitals is Dr. Karen A. Kovalow-St. John affiliated with?

Dr. Kovalow-St. John is affiliated with Dignity Health - French Hospital Medical Center. Dmand AI links Dr. Kovalow-St. John to 3 more hospitals.

What medical group is Dr. Karen A. Kovalow-St. John part of?

Dr. Kovalow-St. John is linked to Rheumatology Services Medical Group.

Does Dr. Karen A. Kovalow-St. John accept Medicare?

Yes. CMS data shows Dr. Kovalow-St. John billed Medicare for 107,382 services in 2024, and Dr. Kovalow-St. John accepts Medicare assignment.

Does Dr. Karen A. Kovalow-St. John offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Kovalow-St. John as offering telehealth services.

Show 9 more questionsShow fewer questions

What is Dr. Karen A. Kovalow-St. John's MIPS score?

Dr. Kovalow-St. John's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.

How many Medicare patients does Dr. Karen A. Kovalow-St. John see?

CMS counts 536 Medicare patients who saw Dr. Kovalow-St. John in 2024, with an average age of 74.

Is Dr. Karen A. Kovalow-St. John board certified?

Yes. Dr. Kovalow-St. John is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Karen A. Kovalow-St. John bill to Medicare?

In 2024, Dr. Kovalow-St. John's most billed Medicare services were injected or infused drug (J3262), injected or infused drug (J1602) and injected or infused drug (J3111).

Where did Dr. Karen A. Kovalow-St. John go to medical school?

Dr. Kovalow-St. John graduated from Indiana University School Of Medicine in 1983.

What drugs does Dr. Karen A. Kovalow-St. John prescribe most?

In 2024 Medicare Part D data, Dr. Kovalow-St. John's most prescribed drugs by claims were Hydroxychloroquine Sulfate, Prednisone and Celecoxib.

Has Dr. Karen A. Kovalow-St. John received payments from drug or device companies?

CMS Open Payments shows $23,708 in general payments to Dr. Kovalow-St. John from 28 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.

How long has Dr. Karen A. Kovalow-St. John been practicing?

Dr. Kovalow-St. John graduated from medical school in 1983, 43 years ago.

What insurance does Dr. Karen A. Kovalow-St. John accept?

Dr. Kovalow-St. John is in network with 9 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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