DR. MATHIAS A. MASEM M.D.
NPI 1508810938
Orthopaedic Surgery - Hand Surgery in Oakland, CA

Active since May 20, 2006PECOS EnrolledAccepts Medicare Assignment
79.23/100
CMS Quality Rating
80 GRAND AVE, SUITE 600, OAKLAND, CA 94612(510) 763-0884(510) 763-1574 Get Directions Write a Review

NPPES record last updated: December 18, 2014. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Mathias A. Masem M.d. NPPES

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

DR. MATHIAS A. MASEM M.D. (NPI 1508810938) is an individual hand surgery provider in Oakland, California, licensed in California (G34134) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Minnesota Medical School (1975).

NPPES Registry Identity

NPI1508810938
Entity TypeIndividualMale
Primary Taxonomy207XS0106X
Provider Legal NameDR. MATHIAS A. MASEMCredential: M.D.
Location Address80 GRAND AVE, SUITE 600Oakland, CA 94612-3744
Mailing Address80 Grand Ave, Suite 600Oakland, CA 94612-3744 · (510) 763-0884 · Fax (510) 763-1574
Fax(510) 763-1574
Sole ProprietorYes
Medical School CMSUniversity Of Minnesota Medical SchoolGraduated 1975
Enumeration DateMay 20, 2006
Last NPPES UpdateDecember 18, 2014
NPI 1508810938 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyOrthopaedic Surgery · Hand SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XS0106X
License Licensed in CA · G34134
Definition
An orthopaedic surgeon trained in the investigation, preservation and restoration by medical, surgical and rehabilitative means of all structures of the upper extremity directly affecting the form and function of the hand and wrist.
Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License G34134 (CA)
80 GRAND AVE, Oakland, CA 94612

Other Identifiers 4

Medicare UPINA45795CA
Medicare NSC6031100001CA
Medicaid00G341340CA
Medicare PIN00G341340CA

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. Mathias A. Masem 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 ID8820026438
PECOS Enrollment IDI20050803000637
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.

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.
296 services41 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.
251 services141 patients
Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg J0702
This injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.
109 services35 patients
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.
92 services69 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
76 services76 patients
Aspiration and/or injection of fluid from small joint using ultrasound guidance 20604
This procedure involves using ultrasound to accurately locate a small joint. A needle is then carefully inserted to remove fluid (aspiration) or inject medication. This can help diagnose or treat joint issues. It's generally safe and minimally invasive.
59 services42 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94612 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
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.

79.23/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality62.23
Promoting Interoperability100
Improvement Activities40

Reported Quality Measures

Breast Cancer Screening
88%25 patients4/55-star benchmark: 93%
Cervical Cancer Screening
31%295 patients2/55-star benchmark: 98%
Closing the Referral Loop: Receipt of Specialist Report
0%509 patients1/55-star benchmark: 87%
Colorectal Cancer Screening
39%51 patients2/55-star benchmark: 88%
Controlling High Blood Pressure
48%25 patients3/55-star benchmark: 91%
Diabetes: Eye Exam
13%48 patients1/55-star benchmark: 100%
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
Lower rates are better for this measure.
35%48 patients3/55-star benchmark: 91%
Documentation of Current Medications in the Medical Record
74%110 patients3/55-star benchmark: 100%
e-Prescribing
93%483 patients2/55-star benchmark: 100%
Falls: Screening for Future Fall Risk
0%254 patients1/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
30%83 patients2/55-star benchmark: 98%
Preventive Care and Screening: Screening for Depression and Follow-Up Plan
3%62 patients1/55-star benchmark: 97%
Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented
0%1,820 patients1/55-star benchmark: 61%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Patients combinedPopulations: 96% · 23 patients
Patients screened: 96% · 23 patients
10%39 patients1/55-star benchmark: 100%
Provide Patients Electronic Access to Their Health Information
100%84 patients5/55-star benchmark: 100%
Use of High-Risk Medications in Older Adults
Lower rates are better for this measure.
Patients appropriateDiagnosis: 4% · 278 patients
Patients totalRate: 5% · 278 patients
4%278 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.

Other Providers at the Same Location NPPES 18

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

Orthopaedic Surgery
80 GRAND AVE, 5TH FLOOR
OAKLAND, CA 94612
Plastic Surgery
80 GRAND AVE, STE. 810
OAKLAND, CA 94612
Plastic Surgery
80 GRAND AVE, STE. 810
OAKLAND, CA 94612
Physician Assistant
80 GRAND AVE
OAKLAND, CA 94612
Case Manager/Care Coordinator
80 GRAND AVE, SUITE 610
OAKLAND, CA 94612
Ophthalmology
80 GRAND AVE, SUITE 700
OAKLAND, CA 94612
Clinic/Center (Ambulatory Surgical)
80 GRAND AVE, SUITE 250
OAKLAND, CA 94612
Clinic/Center (Sleep Disorder Diagnostic)
80 GRAND AVE, SUITE 200
OAKLAND, CA 94612

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 Mathias Masem's NPI number?

The NPI number for Mathias Masem is 1508810938. It was assigned to this individual provider in the NPPES registry on May 20, 2006.

Where is Mathias Masem located?

Mathias Masem practices at 80 Grand Ave Suite 600, Oakland, CA 94612. The listed phone number is (510) 763-0884.

What is Mathias Masem's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Hand Surgery, with taxonomy code 207XS0106X.

Is Mathias Masem enrolled in Medicare?

Yes. Mathias Masem 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 Mathias Masem was last updated on December 18, 2014. NPI Profile syncs with the weekly NPPES data releases published by CMS.