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DR. CATHERINE K PYUN
NPI 1154390144
Internal Medicine in Alameda, CA

Active since March 14, 2006PECOS EnrolledAccepts Medicare Assignment
22.46/100
CMS Quality Rating
2070 CLINTON AVE, ALAMEDA, CA 94501(510) 514-4397(510) 814-4391 Get Directions Write a Review

NPPES record last updated: July 16, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Catherine K Pyun NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CATHERINE K PYUN (NPI 1154390144) is an individual internal medicine provider in Alameda, California, licensed in California (20A6823) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1994).

NPPES Registry Identity

NPI1154390144
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. CATHERINE K PYUN
Location Address2070 CLINTON AVEAlameda, CA 94501-4399
Mailing Address2070 Clinton AveAlameda, CA 94501-4399 · (510) 814-4397 · Fax (510) 814-4391
Phone(510) 514-4397
Fax(510) 814-4391
Sole ProprietorNo
Medical School CMSOtherGraduated 1994
Enumeration DateMarch 14, 2006
Last NPPES UpdateJuly 16, 2007
✔ NPI 1154390144 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20A6823
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2070 CLINTON AVE, Alameda, CA 94501
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Other Identifiers 3

Medicare UPING70523
Medicaid00AX68230CA
Medicare ID-Type Unspecified020A68231

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Catherine K Pyun is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1254375983
PECOS Enrollment IDI20050614000848
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
228 services117 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
107 services52 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
74 services72 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
48 services32 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
37 services21 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
36 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94501 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

22.46/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Promoting Interoperability0
Improvement Activities0
Cost74.86

Reported Quality Measures

Diabetes: Medical Attention for Nephropathy
The percentage of patients 18-75 years of age with diabetes who had a nephropathy screening test or evidence of nephropathy during the measurement period
51%61 patients2/55-star benchmark: 99%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
0%240 patients1/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
1%354 patients1/55-star benchmark: 100%
Preventive Care and Screening: Influenza Immunization
Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization
11%218 patients1/55-star benchmark: 88%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
1%354 patients1/55-star benchmark: 100%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 0% · 265 patients
0%265 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANTONIO DOMENICO MUTO-ISOLANI MD
Emergency Medicine
2070 CLINTON AVE
ALAMEDA, CA 94501
Alameda County (510) 523-4357
WENDY DER HREPCSHAK RD
Dietitian, Registered
2070 CLINTON AVE
ALAMEDA, CA 94501
Alameda County (510) 814-4024
DR. LORRAINE BONNER M.D.
Internal Medicine
2070 CLINTON AVE, RM 2113
ALAMEDA, CA 94501
Alameda County (510) 814-4397
DR. WILLIAM S LOWERY M.D.
Internal Medicine (Pulmonary Disease)
2070 CLINTON AVE
ALAMEDA, CA 94501
Alameda County (510) 814-4089
SPHERICAL MEDICAL, PC
Internal Medicine
2070 CLINTON AVE
ALAMEDA, CA 94501
Alameda County (510) 814-4397
ALICE CHENG
Registered Nurse
2070 CLINTON AVE
ALAMEDA, CA 94501
Alameda County (510) 814-4340
DR. JONAS A WILLIAMS MD
Anesthesiology
2070 CLINTON AVE
ALAMEDA, CA 94501
Alameda County (510) 522-4146
DR. CRAIG A. NIELSEN MD
Anesthesiology
2070 CLINTON AVE
ALAMEDA, CA 94501
Alameda County (510) 522-4146

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Catherine Pyun's NPI number?

The NPI number for Catherine Pyun is 1154390144. It was assigned to this individual provider in the NPPES registry on March 14, 2006.

Where is Catherine Pyun located?

Catherine Pyun practices at 2070 Clinton Ave, Alameda, CA 94501. The listed phone number is (510) 514-4397.

What is Catherine Pyun's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Catherine Pyun enrolled in Medicare?

Yes. Catherine Pyun is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Catherine Pyun was last updated on July 16, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.