Catherine K. Pyun
- Medicare services, 2024
- 624
- Medicare patients, 2024
- 310
- Part D claims, 2024
- 212
- Hospital affiliations
- 2
- Industry payments
- $123
- Practice address
- 2070 Clinton Avenue, Alameda, CA 94501
- Practice phone
- Call (510) 522-3700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Catherine Pyun's professional email, personal email and mobile number
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Catherine K. Pyun is an internist in Alameda, California
Catherine Pyun practices at Alameda Hospital in Alameda, California, part of Alameda County.
Catherine Pyun's NPI, 1154390144, was assigned on March 14, 2006. Catherine Pyun graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury in 1994. Catherine Pyun holds California license 20A6823.
- NPI
- 1154390144NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254375983
- NPI enumeration date
- March 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 522-3700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Catherine K. Pyun practices at Alameda Hospital in Alameda, California
Catherine Pyun's primary practice is Alameda Hospital, at 2070 Clinton Avenue, Alameda, CA 94501 in Alameda County. The practice phone is (510) 522-3700.
- Alameda Hospital2070 Clinton Avenue, Alameda, CA 94501 · Alameda CountyPhone(510) 522-3700
Source: Dmand AI Affiliation Data
Catherine K. Pyun is affiliated with 2 sites of care and 1 medical group
Catherine Pyun's primary practice is Alameda Hospital in Alameda, California, part of Alameda County. Catherine Pyun is also affiliated with Alameda Health System - Highland Hospital. The medical group on file is Alameda Inpatient Medical, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Catherine K. Pyun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Catherine Pyun practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Alameda Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Alameda County and 6.2K+ hospitals, with verified contacts in the same login.
Catherine K. Pyun is one of 16,751 internists in California
Internal medicine is Catherine Pyun's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Catherine Pyun is board certified in acls dec 2017 to dec 2019 by the Advanced Cardiac Life Support. Catherine Pyun is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists atrial fibrillation and flutter, cerebrovascular disease, chronic hypertension, chronic kidney disease, chronic skin ulcer, cirrhosis of the liver, congestive heart failure and electrolyte disorders among the conditions Catherine Pyun treats.
Internists near Catherine Pyun
Counts of internists 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
Catherine K. Pyun billed Medicare for 624 services in 2024
CMS data shows 624 Medicare services from Catherine Pyun across 8 procedure codes in 2024, for 310 Medicare patients. Medicare paid $63,525 for them.
Catherine Pyun's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7482024: 62417%
Where Catherine Pyun's Medicare services took place, 2024
- In an office6711%
- In a facility55789%
Catherine Pyun compared with the California median for internists, 2024
- Catherine Pyun
- California median
- Medicare services
- 624vs 36173% above
- Medicare patients
- 310vs 1512.1 times
- Part D claims
- 33vs 42192% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Catherine Pyun'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Catherine Pyun and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Catherine K. Pyun treated 310 Medicare patients in 2024, average age 69
CMS counts 310 Medicare patients who saw Catherine Pyun in 2024. The largest group is under 65, with 96 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 81% are also on Medicaid. Their average risk score is 2.48, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Catherine Pyun's median patient age at 58, with 38% women.
Catherine Pyun's Medicare patients by age, 2024
Catherine Pyun's Medicare patients by sex, 2024
- Women16052%
- Men15048%
Chronic conditions among Catherine Pyun's Medicare patients, 2024
- High blood pressure75%
- High cholesterol66%
- Diabetes50%
- Mood disorders47%
- Anxiety40%
- Depression40%
- Alzheimer's and dementia35%
- Arthritis34%
Share of Medicare patients with each condition. A patient can have several.
Catherine Pyun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women38%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Catherine K. Pyun wrote 212 Medicare Part D claims in 2024
In 2024, Catherine Pyun wrote 212 Medicare Part D claims for 80 patients. 82% of them were for generic drugs. CMS names the drug for 33 of them, across 1 drug with 11 or more claims each, at $339 in total drug cost. In 2023, CMS named 84 claims across 3 drugs.
Catherine Pyun's Part D claims by kind of drug, 2024
- Generic173 claims82%
- Brand-name39 claims18%
Catherine Pyun'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 Catherine Pyun's Part D claims, 2024
- Antibiotics9%19 of 212 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: 842024: 3361%
Drugs named by CMS: 1 in 2024, 3 in 2023.
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
How Catherine K. Pyun takes part in Medicare
Catherine Pyun accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Catherine K. Pyun received $123 in industry payments in 2024
CMS Open Payments shows 1 general payment to Catherine Pyun from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $123.
Companies that paid Catherine Pyun the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Catherine K. Pyun has 2 awards and honors on record
Dmand AI lists 2 awards for Catherine Pyun, most recently American Medical Women's Association Janet M. Glasgow Award for Academic Excellence in 1994. Catherine Pyun serves on Medical Executive Committee Alameda Hospital and Quality and Safety Council Alameda Hospital.
Awards and honors for Catherine Pyun
- 1994
- American Medical Women's Association Janet M. Glasgow Award for Academic Excellence
- Distinctive Scholar
Catherine Pyun's committees and leadership roles
- Medical Executive Committee Alameda HospitalVice President
- 2018 to present
- Quality and Safety Council Alameda HospitalChairman
- 2017 to present
- Medical Executive Committee Alameda Health SystemsFairmont representative
- 2015 to 2017
Source: Dmand AI Professional Profile Data
Catherine K. Pyun graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury
Catherine Pyun graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury in 1994. Catherine Pyun is a member of Alameda County and Contra Costa County Medical Association, ACP, AOA and Society for Post Acute and Long Term Care.
- Medical school
- Board certified in acls dec 2017 to dec 2019
- Board certified in addiction medicine
- Board certified in internal medicine
- Board certified in addiction medicine
- Board certified in certified wound care specialist physician
- Board certified in certified medical director
- Board certified in buprenorphine waiver
- Board certified in nihss august 2018-august 2020
Source: Dmand AI Professional Profile Data
Catherine K. Pyun accepts plans from 12 insurance carriers
Catherine Pyun is in network with 12 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- United Healthcare
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +4 more carriersWith a free account
Plan types Catherine Pyun accepts, by number of carriers
- PPO8
- HMO6
- EPO3
- Medicare2
- POS1
Source: Dmand AI Insurance Network Data
Sources for Catherine K. Pyun's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Catherine K. Pyun
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Catherine K. Pyun's NPI number?
Catherine K. Pyun's NPI number is 1154390144. It was assigned on March 14, 2006, and it is active in the NPI Registry.
What does Catherine K. Pyun specialize in?
Catherine K. Pyun is an internist in Alameda, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Catherine K. Pyun practice?
Catherine Pyun practices at 2070 Clinton Avenue, Alameda, CA 94501. Catherine Pyun's primary practice is Alameda Hospital in Alameda, California, part of Alameda County.
What is Catherine K. Pyun's office phone number?
The practice phone on file for Catherine Pyun is (510) 522-3700.
What is Catherine K. Pyun's medical license number?
Catherine Pyun holds California license 20A6823.
Which hospitals is Catherine K. Pyun affiliated with?
Catherine Pyun practices at Alameda Hospital in Alameda, California. Catherine Pyun is also affiliated with Alameda Health System - Highland Hospital.
What medical group is Catherine K. Pyun part of?
Catherine Pyun is linked to Alameda Inpatient Medical, Inc.
Does Catherine K. Pyun accept Medicare?
Yes. CMS data shows Catherine Pyun billed Medicare for 624 services in 2024, and Catherine Pyun accepts Medicare assignment.
How many Medicare patients does Catherine K. Pyun see?
CMS counts 310 Medicare patients who saw Catherine Pyun in 2024, with an average age of 69.
Is Catherine K. Pyun board certified?
Yes. Catherine Pyun is board certified in acls dec 2017 to dec 2019 by the Advanced Cardiac Life Support.
Show 6 more questionsShow fewer questions
What services does Catherine K. Pyun bill to Medicare?
In 2024, Catherine Pyun's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and nursing facility care (99309).
Where did Catherine K. Pyun go to medical school?
Catherine Pyun graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury in 1994.
What drugs does Catherine K. Pyun prescribe most?
In 2024 Medicare Part D data, Catherine Pyun's most prescribed drugs by claims were Atorvastatin Calcium.
Has Catherine K. Pyun received payments from drug or device companies?
CMS Open Payments shows $123 in general payments to Catherine Pyun from 1 company from 2024 to 2024. The largest total came from Abbvie Inc.
How long has Catherine K. Pyun been practicing?
Catherine Pyun graduated from medical school in 1994, 32 years ago.
What insurance does Catherine K. Pyun accept?
Catherine Pyun is in network with 12 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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