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ISABELLA GENEVA CHEN M.D.
NPI 1053621730
Internal Medicine - Hematology & Oncology in Ventura, CA

Active since October 15, 2010PECOS EnrolledAccepts Medicare Assignment
87.18/100
CMS Quality Rating
300 HILLMONT AVE, BLDG 340, STE 501, VENTURA, CA 93003(805) 652-6218(805) 652-6512 Get Directions Write a Review

NPPES record last updated: September 29, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 10, 2023, Sep 26, 2019, Mar 17, 2018 and 2 more (5 updates tracked since 2016).

About Isabella Geneva Chen M.d. NPPES

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

ISABELLA GENEVA CHEN M.D. (NPI 1053621730) is an individual hematology & oncology provider in Ventura, California, licensed in California (A118096) and active in the NPI registry since October 2010. She is enrolled in Medicare PECOS and is a graduate of Jefferson Medical College Of Thomas Jefferson University (2010).

NPPES Registry Identity

NPI1053621730
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameISABELLA GENEVA CHENCredential: M.D.
Location Address300 HILLMONT AVE, BLDG 340, STE 501Ventura, CA 93003
Mailing Address800 S Victoria Ave, L4615, Vchca - Physician ServicesVentura, CA 93009-0003 · (805) 677-5181 · Fax (805) 677-5304
Phone(805) 652-6218
Fax(805) 652-6512
Sole ProprietorNo
Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 2010
Enumeration DateOctober 15, 2010
Last NPPES UpdateSeptember 29, 20255 updates tracked since enumeration
NPPES CertifiedSeptember 29, 2025
✔ NPI 1053621730 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · A118096
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal MedicineTaxonomy 207R00000X · License A118096 (CA)
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License A118096 (CA)
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License A118096 (CA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
300 HILLMONT AVE, Ventura, CA 93003
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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

Isabella Geneva Chen M.d. 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 ID5890948822
PECOS Enrollment IDI20161005001991
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 5

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
484 services143 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
251 services66 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
118 services60 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
25 services18 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93003 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
$185.36 typical visit price
range $62.32 – $185.36
Typical copayment $46.34 (range $15.58 – $46.34)
Most-billed visit code 99205
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
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.

87.18/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality84.09
Promoting Interoperability100
Improvement Activities40
Cost56.53

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Enteral feeding supply kit; syringe fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4034
Other-Enteral and Parenteral · category OB006N
1 supplier11 claims330 services$2.52 avg. paid by Medicare
Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152
Other-Enteral and Parenteral · category OB006N
1 supplier11 claims8,668 services$0.25 avg. paid by Medicare
Capecitabine, oral, 500 mg J8521
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier34 claims2,688 services$0.76 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
1 supplier20 claims20 services$18.92 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
1 supplier14 claims14 services$12.60 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DANIEL FREITAS
Case Manager/Care Coordinator
300 HILLMONT AVE
VENTURA, CA 93003
Ventura County (805) 652-6161
LINDSAY ANN LOFT FNP
Nurse Practitioner (Family)
300 HILLMONT AVE, BLDG 340, STE 401
VENTURA, CA 93003
Ventura County (805) 641-0141
DENNIS J WATSON
Counselor (Mental Health)
300 HILLMONT AVE
VENTURA, CA 93003
Ventura County (805) 562-5907
NATHAN BRODIE
Case Manager/Care Coordinator
300 HILLMONT AVE
VENTURA, CA 93003
Ventura County (805) 652-6161
MARY E. RASMUSSEN REG.NURSE
Registered Nurse
300 HILLMONT AVE
VENTURA, CA 93003
Ventura County (805) 652-3200
KAYLEE MICHELLE JONES HANTKE
Student in an Organized Health Care Education/Training Program
300 HILLMONT AVE
VENTURA, CA 93003
Ventura County (805) 652-6000
DR. LINDA J. LEE MD
Pathology (Anatomic Pathology & Clinical Pathology)
300 HILLMONT AVE
VENTURA, CA 93003
Ventura County (213) 867-7814
PHILLIP ANDREW THOMAS PRUSACK MD
Family Medicine
300 HILLMONT AVE
VENTURA, CA 93003
Ventura County (805) 652-6556

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 Isabella Chen's NPI number?

The NPI number for Isabella Chen is 1053621730. It was assigned to this individual provider in the NPPES registry on October 15, 2010.

Where is Isabella Chen located?

Isabella Chen practices at 300 Hillmont Ave Bldg 340, Ste 501, Ventura, CA 93003. The listed phone number is (805) 652-6218.

What is Isabella Chen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Isabella Chen enrolled in Medicare?

Yes. Isabella Chen 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 Isabella Chen was last updated on September 29, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.