Jennifer Casey

Endocrinology, Diabetes & Metabolism

Internal Medicine

Jennifer Casey is an Endocrinology, Diabetes & Metabolism specialist based in Castro Valley, CA with over 17 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(510) 204-1844Castro Valley, CA
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Jennifer Casey has been part of the Castro Valley medical community since 2009 in group practice. With 17+ years of experience, she has been practicing in the Castro Valley area. CMS Medicare data shows her patients commonly have hypertension, high cholesterol, and diabetes.

1 of 547 Internal Medicine providers in CASee all Internal Medicine in Castro Valley17+ years experienceNPI since 2009

Older · 914dNPPES updated 2023-11-21 · verify NPI on CMS · Verify license at Medical Board of California

Contact & Location

Practice Location

20101 Lake Chabot Rd, Castro Valley, CA 94546-5305

CMS Clinical Data

How Does This Doctor Compare?

Generic Rx

↑ Higher = better

49.8%

California avg: 83.3 · US avg: 82.8

Lower than most doctors nationally(-33 pts)

How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.

Medicare Patients

140

Unique beneficiaries

Standard volume

Prescription Recipients

148

Patients prescribed

Prescriptions Written

598

Total claims

Total Medicare drug cost: $288k

Percentile rankings compared against 9,360 reporting peers in California.

Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Diabetes.

Hypertension
Higher than avg (+5%)75%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↑ More patients than average (+5%) — a focus area for this doctor

High Cholesterol
Higher than avg (+5%)75%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↑ More patients than average (+5%) — a focus area for this doctor

Diabetes
Higher than avg (+27%)61%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

↑ More patients than average (+27%) — a focus area for this doctor

Chronic Kidney Disease
Higher than avg (+24%)54%

Gradual loss of kidney function over time, often linked to diabetes or hypertension

US avg: 29.6%

↑ More patients than average (+24%) — a focus area for this doctor

Arthritis
Lower than avg (-8%)41%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↓ Fewer patients than average (-8%) — less common here

Mood Disorders
40%

Conditions affecting emotional state, including depression and bipolar disorder

Ischemic Heart Disease
Higher than avg (+5%)37%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

US avg: 31.7%

↑ More patients than average (+5%) — a focus area for this doctor

Heart Failure
Higher than avg (+14%)36%

The heart cannot pump blood efficiently enough to meet the body's needs

US avg: 22.5%

↑ More patients than average (+14%) — a focus area for this doctor

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Board certified · Dec 21, 2022

    Self-reported via NPPES

  2. 17 years in practice

    Experienced

Endocrinologists treat hormonal and metabolic disorders including diabetes (type 1 and 2), thyroid disease, osteoporosis, adrenal disorders, pituitary conditions, and polycystic ovary syndrome (PCOS).

Taxonomy: 207RE0101X

Practice Footprint

Mailing address

325 Distel Cir, Los Altos, CA 94022-1408

Differs from practice location

Primary hospital affiliation: Critical Access Hospitals

CMS Certification Number: 201305

View hospital on Medicare Care Compare

Virtual Endocrinology, Diabetes & Metabolism Care With Jennifer Casey

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Jennifer Casey for blood pressure monitoring, cholesterol management, diabetes check-ins — no travel to Castro Valley required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about Jennifer Casey

Dr. Casey is listed as active in the NPI registry with telehealth listed in Castro Valley, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (510) 204-1844.

Verified across 4 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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