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DUC MARCEL NGUYEN MD
NPI 1013013416
Specialist in Redwood City, CA

Active since September 15, 2006PECOS EnrolledAccepts Medicare Assignment
75/100
CMS Quality Rating
2900 WHIPPLE AVE, STE 115, REDWOOD CITY, CA 94062(650) 365-5996(650) 365-0655 Get Directions Write a Review

NPPES record last updated: June 30, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Duc Marcel Nguyen Md NPPES

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

DUC MARCEL NGUYEN MD (NPI 1013013416) is an individual specialist in Redwood City, California, licensed in California (G56493) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Howard County Medical Center, and is a graduate of University Of California, Davis School Of Medicine (1982).

NPPES Registry Identity

NPI1013013416
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDUC MARCEL NGUYENCredential: MD
Location Address2900 WHIPPLE AVE, STE 115Redwood City, CA 94062-2858
Mailing Address2900 Whipple Ave, Ste 115Redwood City, CA 94062-2858 · (650) 365-5996 · Fax (650) 365-0655
Phone(650) 365-5996
Fax(650) 365-0655
Sole ProprietorYes
Medical School CMSUniversity Of California, Davis School Of MedicineGraduated 1982
Enumeration DateSeptember 15, 2006
Last NPPES UpdateJune 30, 2016
✔ NPI 1013013416 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · G56493
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
2900 WHIPPLE AVE, Redwood City, CA 94062
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINA53145CA
Medicare ID-Type Unspecified00G564930CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Duc Marcel Nguyen Md 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 ID3971648718
PECOS Enrollment IDI20100304000820
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.

Medicare Billing Reassignment

Medicare enrollment records show Duc Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

San Mateo County
1.4 mi
Community/Behavioral Health
802 BREWSTER AVE
Redwood City, CA 94063
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: County Of San Mateo
  • Also billed through NPI 1831268580 (California)
  • 597 clinicians in this Medicare group
NPI 1912926692 (650) 363-4111

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

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.
291 services138 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
51 services50 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
48 services48 patients
Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
47 services31 patients
Aspiration and/or injection of fluid from large joint 20610
This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.
36 services25 patients
Imaging guidance for procedure, 60 minutes or less 76000
Imaging guidance is a procedure where real-time images are used to direct medical tools during a treatment. This technique helps to improve accuracy and safety. The procedure typically lasts 60 minutes or less.
23 services22 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Johns Hopkins Howard County Medical Center

Acute Care Hospitals · Columbia, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210048
Location5755 Cedar LaneColumbia, MD 21044 · Howard County
Emergency services Birthing friendly

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.

75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored

Reported Quality Measures

Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
99%2,069 patients4/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
78%176 patients3/55-star benchmark: 100%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
5%123 patients1/55-star benchmark: 98%
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.
99%458 patients4/55-star benchmark: 100%
Osteoarthritis (OA): Function and Pain Assessment
Percentage of patient visits for patients aged 21 years and older with a diagnosis of osteoarthritis (OA) with assessment for function and pain
95%140 patients4/55-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.
39%316 patients2/55-star benchmark: 100%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
78%32 patients4/55-star benchmark: 100%
Preventive Care and Screening: Unhealthy Alcohol Use: Screening & Brief Counseling
Percentage of patients aged 18 years and older who were screened for unhealthy alcohol use using a systematic screening method at least once within the last 24 months AND who received brief counseling if identified as an unhealthy alcohol user
99%415 patients4/55-star benchmark: 100%
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…
68%316 patients3/55-star benchmark: 100%
Screening for Osteoporosis for Women Aged 65-85 Years of Age
Percentage of female patients aged 65-85 years of age who ever had a central dual-energy X-ray absorptiometry (DXA) to check for osteoporosis
38%173 patients2/55-star benchmark: 97%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
27%316 patients2/55-star benchmark: 79%
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.

DR. BARRETT BRYAN MD
Internal Medicine
2900 WHIPPLE AVE, SUITE 130
REDWOOD CITY, CA 94062
San Mateo County (650) 298-8774
DR. JAMES JEROME ZIMMERMAN M.D.
Surgery (Vascular Surgery)
2900 WHIPPLE AVE, SUITE 225
REDWOOD CITY, CA 94062
San Mateo County (650) 366-0225
MS. VIRGINIA MORROW MSN, ANP
Nurse Practitioner
2900 WHIPPLE AVE, SUITE 245
REDWOOD CITY, CA 94062
San Mateo County (650) 365-3700
DR. BETTY HO M.D.
Internal Medicine (Gastroenterology)
2900 WHIPPLE AVE, STE 245
REDWOOD CITY, CA 94062
San Mateo County (650) 365-2911
MS. JENNIFER ROSE SUTTON PA-C
Physician Assistant (Medical)
2900 WHIPPLE AVE, SUITE 210
REDWOOD CITY, CA 94062
San Mateo County (650) 366-4542
SEQUOIA MEDICAL ASSOCIATES
Internal Medicine
2900 WHIPPLE AVE, SUITE 130
REDWOOD CITY, CA 94062
San Mateo County (650) 298-8774
MRS. SIGAL ALONA TENE MD
Internal Medicine (Critical Care Medicine)
2900 WHIPPLE AVE, STE 115
REDWOOD CITY, CA 94062
San Mateo County (650) 368-8981
ANDREW T LIU M D AND DOROTHY A SHOUP M D A PROFESSIONAL CORPORATION
Specialist
2900 WHIPPLE AVE, #135
REDWOOD CITY, CA 94062
San Mateo County (650) 366-5594

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 Duc Nguyen's NPI number?

The NPI number for Duc Nguyen is 1013013416. It was assigned to this individual provider in the NPPES registry on September 15, 2006.

Where is Duc Nguyen located?

Duc Nguyen practices at 2900 Whipple Ave Ste 115, Redwood City, CA 94062. The listed phone number is (650) 365-5996.

What is Duc Nguyen's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Duc Nguyen enrolled in Medicare?

Yes. Duc Nguyen 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.

Which organization bills Medicare for Duc Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Duc Nguyen reassigns Medicare benefits to San Mateo County (Redwood City, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Duc Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Duc Nguyen affiliated with any hospitals?

According to CMS data, Duc Nguyen is affiliated with Johns Hopkins Howard County Medical Center.

When was this NPI record last updated?

The NPPES record for Duc Nguyen was last updated on June 30, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.