Dr. Kathryn M. Welty, MD

  • San Leandro, CA
  • Nephrologist
NPI1740476761PAC ID5496980013
Medicare services, 2024
1,947
Medicare patients, 2024
510
Part D claims, 2024
1,393
MIPS score, 2024
96
Hospital affiliations
5
Practice address
13851 E 14th St, San Leandro, CA 94578
Practice phone
Call (661) 288-5700
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Novelty Surgical Center

San Leandro, California

See all 13 affiliations

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Dr. Kathryn M. Welty is a nephrologist in San Leandro, California

Dr. Welty practices at Novelty Surgical Center in San Leandro, California.

Dr. Welty's NPI, 1740476761, was assigned on September 24, 2007. Dr. Welty graduated from Vanderbilt University School Of Medicine in 2007. Dr. Welty holds California license A126967.

NPI and contact details
Medicare PAC ID
5496980013
NPI enumeration date
September 24, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(661) 288-5700
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
45
Medical school graduation
2007

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

Dr. Kathryn M. Welty practices at Novelty Surgical Center in San Leandro, California

Dr. Welty's primary practice is Novelty Surgical Center, at 13851 E 14th St, San Leandro, CA 94578 in Alameda County. The practice phone is (661) 288-5700.

  • Novelty Surgical Center
    13851 E 14th St, San Leandro, CA 94578 · Alameda CountyPhone(661) 288-5700

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Kathryn M. Welty is affiliated with 11 sites of care and 2 medical groups

Dr. Welty's primary practice is Novelty Surgical Center in San Leandro, California. Dr. Welty is also affiliated with Stanford Hospital at 300 Pasteur Drive. The medical group on file is Alameda Health System. Dmand AI also links Dr. Welty to 4 more hospitals, 3 dialysis centers, 2 group practices and clinics and 1 medical group, each named with a free account.

See all 13 affiliations for Dr. Welty

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Kathryn M. Welty's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Welty practices, 10 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Novelty Surgical CenterAvailable with a free account
+10 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Kathryn M. Welty is one of 1,401 nephrologists in California

Nephrology is Dr. Welty's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Welty is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Welty's licenses on file in 3 states: California, Washington and Montana.

Specialties and state licenses

  • Nephrology, CaliforniaPrimaryLicense A126967 · 2013 to 2027 · taxonomy 207RN0300X
  • Internal medicine, WashingtonLicense ML20008878 · 2007 to 2014 · taxonomy 207R00000X
  • Montana license2010

Clinical focus

Dmand AI lists acute kidney failure, chronic anemia, chronic kidney disease, fluid and electrolyte imbalances, kidney disease and parathyroid gland disorder among the conditions Dr. Welty treats.

Nephrologists near Dr. Welty

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

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

Dr. Kathryn M. Welty billed Medicare for 1,947 services in 2024

CMS data shows 1,947 Medicare services from Dr. Welty across 14 procedure codes in 2024, for 510 Medicare patients. Medicare paid $263,851 for them.

Medicare services, 20241,947
Medicare patients510
Paid by Medicare$263,851
Procedure codes14

Dr. Welty's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1,3492024: 1,2974%
Tests and treatments
2023: 5382024: 48310%
Other services
2023: 02024: 167

Where Dr. Welty's Medicare services took place, 2024

  • In an office1,24564%
  • In a facility70236%

Dr. Welty compared with the California median for nephrologists, 2024

  • Dr. Welty
  • California median
Medicare services
1,947vs 1,08480% above
Medicare patients
510vs 30766% above
Part D claims
1,159vs 95521% above

Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.

Dr. Welty'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. Welty

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Welty and other nephrologists in California.

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

Dr. Kathryn M. Welty treated 510 Medicare patients in 2024, average age 74

CMS counts 510 Medicare patients who saw Dr. Welty in 2024. The largest group is 75 to 84, with 173 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 55% are also on Medicaid. Their average risk score is 4.34, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Welty's median patient age at 70, with 42% women.

Medicare patients, 2024510
Average age74
Average risk score4.34
Also on Medicaid55%

Dr. Welty's Medicare patients by age, 2024

Dr. Welty's Medicare patients by sex, 2024

  • Women26051%
  • Men25049%

Chronic conditions among Dr. Welty's Medicare patients, 2024

  1. Chronic kidney disease75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes65%
  5. Heart failure50%
  6. Ischemic heart disease44%
  7. Arthritis39%
  8. Atrial fibrillation33%

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

Dr. Welty's patients across all payers

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

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women42%
  • Men49%

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

Dr. Kathryn M. Welty wrote 1,393 Medicare Part D claims in 2024

In 2024, Dr. Welty wrote 1,393 Medicare Part D claims for 189 patients. 82% of them were for generic drugs. CMS names the drug for 1,159 of them, across 29 drugs with 11 or more claims each, at $239,445 in total drug cost. In 2023, CMS named 1,082 claims across 29 drugs.

Part D claims, 20241,393
Drugs named by CMS29
Total drug cost$239,445
Part D patients189

Dr. Welty's Part D claims by kind of drug, 2024

  • Generic1,142 claims82%
  • Brand-name and other251 claims18%

Dr. Welty'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. Welty's Part D claims, 2024

  • Antibiotics2%32 of 1,393 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: 1,0822024: 1,1597%

Drugs named by CMS: 29 in 2024, 29 in 2023.

See all prescribing by Dr. Welty

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. Kathryn M. Welty scored 96 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Welty for performance year 2024, reported individually. Dr. Welty accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Welty as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Welty's MIPS scores, performance year 2024

  • 96of 100Final score
  • 85.1of 100Quality
  • 98of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 71of 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. Kathryn M. Welty received $1,380 in industry payments from 2016 to 2025

CMS Open Payments shows 45 general payments to Dr. Welty from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Calliditas Therapeutics US Inc. paid the most, $156.

General payments to Dr. Welty by program year, 2016 to 2025

Companies that paid Dr. Welty the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Welty

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

Dr. Kathryn M. Welty graduated from Vanderbilt University School Of Medicine

Dr. Welty graduated from Vanderbilt University School Of Medicine in 2007.

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

Source: Dmand AI Professional Profile Data

Dr. Kathryn M. Welty accepts plans from 16 insurance carriers

Dr. Welty is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Humana
  • Regence Health Plans
  • +8 more carriersWith a free account

Plan types Dr. Welty accepts, by number of carriers

  1. PPO10
  2. Medicare9
  3. HMO6
  4. EPO4
  5. POS4

Source: Dmand AI Insurance Network Data

Sources for Dr. Kathryn M. Welty'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)
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. Kathryn M. Welty

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. Kathryn M. Welty's NPI number?

Dr. Kathryn M. Welty's NPI number is 1740476761. It was assigned on September 24, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Kathryn M. Welty?

Dr. Kathryn M. Welty is a nephrologist in San Leandro, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).

Where does Dr. Kathryn M. Welty practice?

Dr. Welty practices at 13851 E 14th St, San Leandro, CA 94578. Dr. Welty's primary practice is Novelty Surgical Center in San Leandro, California. Dmand AI also links Dr. Welty to 4 hospitals, 3 dialysis centers, 2 group practices and clinics and 1 medical group.

What is Dr. Kathryn M. Welty's office phone number?

The practice phone on file for Dr. Welty is (661) 288-5700.

What is Dr. Kathryn M. Welty's medical license number?

Dr. Welty holds California license A126967, one of the licenses on file in 3 states.

Which states has Dr. Kathryn M. Welty been licensed in?

Dmand AI has state licenses on file for Dr. Welty in California (2013 to 2027), Washington (2007 to 2014) and Montana (2010).

Which hospitals is Dr. Kathryn M. Welty affiliated with?

Dr. Welty is affiliated with Stanford Hospital at 300 Pasteur Drive. Dmand AI links Dr. Welty to 4 more hospitals.

What medical group is Dr. Kathryn M. Welty part of?

Dr. Welty is linked to Alameda Health System. Dmand AI links Dr. Welty to 1 more medical group.

Does Dr. Kathryn M. Welty accept Medicare?

Yes. CMS data shows Dr. Welty billed Medicare for 1,947 services in 2024, and Dr. Welty accepts Medicare assignment.

Does Dr. Kathryn M. Welty offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Welty as offering telehealth services.

Show 9 more questionsShow fewer questions

What is Dr. Kathryn M. Welty's MIPS score?

Dr. Welty's MIPS final score for performance year 2024 is 96 out of 100, reported individually.

How many Medicare patients does Dr. Kathryn M. Welty see?

CMS counts 510 Medicare patients who saw Dr. Welty in 2024, with an average age of 74.

Is Dr. Kathryn M. Welty board certified?

Yes. Dr. Welty is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Kathryn M. Welty bill to Medicare?

In 2024, Dr. Welty's most billed Medicare services were office visit, established patient (99214), dialysis (90960) and hospital inpatient care (99232).

Where did Dr. Kathryn M. Welty go to medical school?

Dr. Welty graduated from Vanderbilt University School Of Medicine in 2007.

What drugs does Dr. Kathryn M. Welty prescribe most?

In 2024 Medicare Part D data, Dr. Welty's most prescribed drugs by claims were Amlodipine Besylate, Losartan Potassium and Hydralazine HCl.

Has Dr. Kathryn M. Welty received payments from drug or device companies?

CMS Open Payments shows $1,380 in general payments to Dr. Welty from 22 companies from 2016 to 2025. The largest total came from Calliditas Therapeutics US Inc.

How long has Dr. Kathryn M. Welty been practicing?

Dr. Welty graduated from medical school in 2007, 19 years ago.

What insurance does Dr. Kathryn M. Welty accept?

Dr. Welty is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

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