WILLIAM WEI MING CHEN MD
NPI 1851498372
Internal Medicine in San Pablo, CA

Q: What is William Chen's NPI number?

The NPI number for William Chen is 1851498372. It was assigned to this individual provider in the NPPES registry on September 19, 2006.

Q: What is William Chen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for William Chen was last updated on November 5, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.

Active since September 19, 2006PECOS Enrolled

81.08/100

CMS Quality Rating

2089 VALE RD, #34, SAN PABLO, CA 94806(510) 235-9247(510) 235-9248 Get Directions Write a Review

NPPES record last updated: November 5, 2009. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About William Wei Ming Chen Md NPPES

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

WILLIAM WEI MING CHEN MD (NPI 1851498372) is an individual internal medicine provider in San Pablo, California, licensed in California (A070200) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Js Weill Medical College, Cornell University (1998).

NPPES Registry Identity

NPI1851498372

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameWILLIAM WEI MING CHENCredential: MD

Location Address2089 VALE RD, #34San Pablo, CA 94806

Mailing Address2089 Vale Rd, #34San Pablo, CA 94806 · (510) 235-9247 · Fax (510) 235-9248

Phone(510) 235-9247

Fax(510) 235-9248

Sole ProprietorNo

Medical School CMSJs Weill Medical College, Cornell UniversityGraduated 1998

Enumeration DateSeptember 19, 2006

Last NPPES UpdateNovember 5, 2009

✔ NPI 1851498372 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A070200

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.

Also ListedAllergy & ImmunologyTaxonomy 207K00000X · License A070200 (CA)

2089 VALE RD, San Pablo, CA 94806

Open in Google Maps ↗

Other Identifiers 5

Medicare UPINH71446

Other00A702000Bs Of Ca

Other431996194Bc Of Ca

Medicare ID-Type UnspecifiedZZZ25764ZCA

MedicaidA702000CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Wei Ming Chen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9032215322

PECOS Enrollment IDI20070502000697

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 12

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 low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

1,449 services399 patients

Annual alcohol misuse screening, 5 to 15 minutes G0442

An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.

325 services325 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

282 services282 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

268 services104 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

189 services182 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

170 services165 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.

155 services135 patients

Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a G0179

This procedure involves a doctor or approved practitioner reviewing your health status and re-certifying your need for Medicare-covered home health services. It includes communication with the home health agency and assessment of your health reports, even when you're not physically present.

93 services49 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

62 services13 patients

Assessment of emotional or behavioral problems 96127

Assessment of emotional or behavioral problems involves a thorough evaluation of your feelings, thoughts, and behaviors. It's a process where professionals study patterns over time to identify potential issues like anxiety, depression, or other mental health conditions.

56 services56 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

21 services21 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94806 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.

81.08/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

71.34

Improvement Activities

Cost

58.48

Reported Quality Measures

Atrial Fibrillation and Atrial Flutter: Chronic Anticoagulation Therapy

100%55 patients5/55-star benchmark: 100%

Chronic Obstructive Pulmonary Disease (COPD): Long-Acting Inhaled Bronchodilator Therapy

93%27 patients

Coronary Artery Disease (CAD): Antiplatelet Therapy

97%32 patients4/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

18%239 patients4/55-star benchmark: 98%

Heart Failure (HF): Angiotensin-Converting Enzyme (ACE) Inhibitor or Angiotensin Receptor Blocker (ARB) or Angiotensin Receptor-Neprilysin Inhibitor (ARNI) Therapy for Left Ventricular Systolic Dysfunction (LVSD)

89%35 patients3/55-star benchmark: 100%

Heart Failure (HF): Beta-Blocker Therapy for Left Ventricular Systolic Dysfunction (LVSD)

93%41 patients4/55-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.

Referred Medical Equipment & Supplies CMS DME claims 32

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

26 suppliers116 claims344 services$5.42 avg. paid by Medicare

Normal, low and high calibrator solution / chips A4256

DME-Other DME · category DE000N

3 suppliers17 claims17 services$2.59 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

18 suppliers66 claims106 services$0.84 avg. paid by Medicare

Male external catheter, with or without adhesive, disposable, each A4349

DME-Medical/Surgical Supplies · category DA000N

1 supplier13 claims455 services$1.63 avg. paid by Medicare

Urinary drainage bag, leg or abdomen, vinyl, with or without tube, with straps, each A4358

DME-Orthotic Devices · category DF000N

1 supplier12 claims24 services$5.75 avg. paid by Medicare

Composite dressing, sterile, pad size 16 sq. in. or less, with any size adhesive border, each dressing A6203

DME-Medical/Surgical Supplies · category DA023N

1 supplier17 claims391 services$3.26 avg. paid by Medicare

Foam dressing, wound cover, sterile, pad size 16 sq. in. or less, with any size adhesive border, each dressing A6212

DME-Medical/Surgical Supplies · category DA023N

1 supplier17 claims399 services$9.40 avg. paid by Medicare

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 supplier13 claims391 services$2.52 avg. paid by Medicare

Enteral feeding supply kit; pump fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4035

Other-Enteral and Parenteral · category OB006N

4 suppliers14 claims367 services$4.61 avg. paid by Medicare

Enteral formula, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4150

Other-Enteral and Parenteral · category OB006N

3 suppliers12 claims5,078 services$0.32 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

2 suppliers14 claims7,173 services$0.25 avg. paid by Medicare

Enteral nutrition infusion pump, any type B9002

Other-Enteral and Parenteral · category OB005N

5 suppliers16 claims16 services$54.75 avg. paid by Medicare

Walker, heavy duty, wheeled, rigid or folding, any type E0149

DME-Other DME · category DE000N

2 suppliers15 claims15 services$9.43 avg. paid by Medicare

Commode chair, mobile or stationary, with detachable arms E0165

DME-Other DME · category DE000N

1 supplier11 claims11 services$7.69 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), without side rails, without mattress E0295

DME-Hospital Beds · category DB000N

5 suppliers39 claims39 services$44.61 avg. paid by Medicare

Bed side rails, half length E0305

DME-Hospital Beds · category DB000N

4 suppliers32 claims34 services$6.46 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$11.20 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

3 suppliers28 claims29 services$2.81 avg. paid by Medicare

Respiratory suction pump, home model, portable or stationary, electric E0600

DME-Other DME · category DE000N

1 supplier12 claims12 services$36.00 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

1 supplier29 claims29 services$29.50 avg. paid by Medicare

Transport chair, adult size, patient weight capacity up to and including 300 pounds E1038

DME-Other DME · category DE000N

2 suppliers18 claims18 services$8.66 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier12 claims12 services$57.46 avg. paid by Medicare

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier12 claims360 services$0.31 avg. paid by Medicare

Mycophenolic acid, oral, 180 mg J7518

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier11 claims1,320 services$1.01 avg. paid by Medicare

Arformoterol, inhalation solution, fda approved final product, non-compounded, administered through dme, unit dose form, 15 micrograms J7605

DME-Drugs Administered Through DME · category DG006N

1 supplier12 claims720 services$4.54 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

3 suppliers17 claims4,266 services$0.03 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

3 suppliers70 claims70 services$12.49 avg. paid by Medicare

Elevating leg rests, pair (for use with capped rental wheelchair base) K0195

DME-Wheelchairs · category DD021N

1 supplier11 claims11 services$7.03 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

7 suppliers49 claims49 services$189.73 avg. paid by Medicare

Power wheelchair, group 2 standard, captains chair, patient weight capacity up to and including 300 pounds K0823

DME-Wheelchairs · category DD009N

1 supplier16 claims16 services$166.87 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$12.62 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

3 suppliers26 claims26 services$24.02 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 19

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

DR. TERESA MARIE VAN WOY DPM

Podiatrist (Primary Podiatric Medicine)

2089 VALE RD, 12
SAN PABLO, CA 94806

Contra Costa County (510) 232-0892

DR. KHOSROW AFSARI FACP MD

Internal Medicine

2089 VALE RD, #21
SAN PABLO, CA 94806

Contra Costa County (510) 232-9065

WILLIAM ALBERT VAN DYK DDS

Dentist (General Practice)

2089 VALE RD, SUITE 30
SAN PABLO, CA 94806

Contra Costa County (510) 236-1662

ROBERT G. CLARK M.D.

Family Medicine

2089 VALE RD, SUITE 17
SAN PABLO, CA 94806

Contra Costa County (510) 237-2802

MARK SILVERT MD

Specialist

2089 VALE RD, SUITE 25
SAN PABLO, CA 94806

Contra Costa County (510) 235-1137

DR. JACQUELINE JEEYUNG PARK M.D.

Internal Medicine (Gastroenterology)

2089 VALE RD, SUITE 33
SAN PABLO, CA 94806

Contra Costa County (510) 234-5012

DR. MAHSA JABERIANSARI DDS

Dentist (General Practice)

2089 VALE RD, SUITE 15 AND 16
SAN PABLO, CA 94806

Contra Costa County (415) 746-9412

RAYNATO OCAMPO CASTRO JR. D.D.S.

Dentist (General Practice)

2089 VALE RD, STE 30
SAN PABLO, CA 94806

Contra Costa County (510) 236-1662

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 William Chen's NPI number?

The NPI number for William Chen is 1851498372. It was assigned to this individual provider in the NPPES registry on September 19, 2006.

Where is William Chen located?

William Chen practices at 2089 Vale Rd #34, San Pablo, CA 94806. The listed phone number is (510) 235-9247.

What is William Chen's specialty?

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

Is William Chen enrolled in Medicare?

Yes. William Chen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Chen was last updated on November 5, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.