2026 NPPES data Addiction Medicine (Family Medicine) Physician NPI 1770011348 DO
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MATILDE FREDRICKSON, DO

Addiction Medicine (Family Medicine) Physician in OAKLAND, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 283 beneficiaries · Addiction Medicine (Family Medicine) Physician avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.0409/100
▲ 8 pts above national avg 83.1 · [object Object]
What the federal data reveals: MATILDE FREDRICKSON, DO is a Addiction Medicine (Family Medicine) Physician ([object Object]) practicing in OAKLAND, California with a Medicare Part D prescribing footprint of 2K claims across 283 beneficiaries — 15% brand-name prescribing . Their CMS MIPS Final Score of 91.0409/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: MATILDE FREDRICKSON, DO reported a CMS MIPS final score of 91.0409 out of 100, above the 83.1 national average, and filed 2,184 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MATILDE FREDRICKSON, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

MATILDE FREDRICKSON, DO at a glance

High performer (top quartile)

NPI registry status

Active

Issued 05/26/2017

NPI 1770011348

Primary specialty

Addiction Medicine (Family Medicine) Physician

Niche

763 US NPIs in this specialty

Medicare Part D claims

2,184 93% vs specialty avg

2023 prescription claims

Specialty avg: 1,134

MIPS final score

91.0409/100 7.940899999999999% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in California

How Addiction Medicine (Family Medicine) Physician compares to other specialties among California providers

California providers

Addiction Medicine (Family Medicine) Physician share within California

1. Addiction Medicine (Family Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Medicine (Family Medicine) Physician share within California

Medicare quality performance — MIPS

MATILDE FREDRICKSON, DO's 2023 MIPS final score plotted against the Addiction Medicine (Family Medicine) Physician national average

High performer (top quartile)
MIPS Final Score
91.0409/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Addiction Medicine (Family Medicine) Physician) — 91.0409/100 vs national avg 83.1

0%100%National avg83%91%
MIPS final score (Addiction Medicine (Family Medicine) Physician) — 91.0409/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

MATILDE FREDRICKSON, DO is a Addiction Medicine (Family Medicine) Physician provider practicing in OAKLAND, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1770011348. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MATILDE FREDRICKSON, DO appears in the CMS NPPES registry as a Addiction Medicine (Family Medicine) Physician provider holding DO credentials at 1411 E 31ST ST, OAKLAND, CA, 94602, with a listed phone of (510) 437-5039. NPI 1770011348 was issued on 05/26/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FREDRICKSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,184 prescription claims written by this provider, covering 283 Medicare beneficiaries and totaling roughly $357K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 5.3%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.0409/100 for the 2023 performance year (Quality 82.1321, Cost 64.1093), compared with the national average of 83.1.

Addiction Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 763 enrolled providers across 48 states and an average of 1,134 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1411 E 31ST ST
OAKLAND, CA 94602

Provider Details

NPI 1770011348
Specialty Addiction Medicine (Family Medicine) Physician
Credentials DO
Gender Female
NPI Issued 05/26/2017

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

91.0409
Final Score
Avg: 83.1
82.1321
Quality
64.1093
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where MATILDE FREDRICKSON, DO bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

ALAMEDA HEALTH SYSTEM
OAKLAND, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to MATILDE FREDRICKSON, DO. To verify MATILDE FREDRICKSON, DO's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

MATILDE FREDRICKSON, DO — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 2,184 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

2,184
Total Claims
$357K
Total Drug Cost
283
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,944
Total Day Supply
113,531
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$278K
Generic Drug Cost
$76K
Opioid Claims
116 (5.3% rate)
Antibiotic Claims
24

Patient Demographics

Average Patient Age
65.6 years
Avg HCC Risk Score
1.53
Gender Split
56% female / 44% male
Age Distribution
<65: 93, 65-74: 144, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
148
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
108
Gabapentin
108
Amlodipine Besylate
102
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
63
Lisinopril
52
Metformin Hcl
49
Diclofenac Sodium
37
Montelukast Sodium
35
Levothyroxine Sodium
34

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Addiction Medicine (Family Medicine) Physician Overview

How MATILDE FREDRICKSON, DO fits within the Addiction Medicine (Family Medicine) Physician landscape nationally.

763
Addiction Medicine (Family Medicine) Physician Providers in US
48
States with Addiction Medicine (Family Medicine) Physician
1,134
Avg Claims per Provider

MATILDE FREDRICKSON, DO's 2,184 claims are above the specialty average of 1,134.

Nearby Addiction Medicine (Family Medicine) Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as FREDRICKSON.

Compare Addiction Medicine (Family Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MATILDE FREDRICKSON, DO's specialty?
MATILDE FREDRICKSON, DO specializes in Addiction Medicine (Family Medicine) Physician and practices in OAKLAND, California. Credentials: DO.
How much does MATILDE FREDRICKSON, DO prescribe under Medicare Part D?
In 2023, MATILDE FREDRICKSON, DO wrote 2,184 Medicare Part D claims totaling $357K in drug costs for 283 beneficiaries.
What is MATILDE FREDRICKSON, DO's Medicare quality score?
MATILDE FREDRICKSON, DO has a CMS MIPS Final Score of 91.0409/100 (Quality: 82.1321, Cost: 64.1093). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MATILDE FREDRICKSON, DO located?
MATILDE FREDRICKSON, DO is located at 1411 E 31ST ST, OAKLAND, CA, 94602. Phone: (510) 437-5039.
What is MATILDE FREDRICKSON, DO's NPI number?
MATILDE FREDRICKSON, DO's National Provider Identifier (NPI) is 1770011348, issued on 05/26/2017.
Does MATILDE FREDRICKSON, DO prescribe more brand-name or generic drugs?
MATILDE FREDRICKSON, DO's prescribing is 15% brand-name and 85% generic drugs by claim count, with $278K in brand drug costs.
Does MATILDE FREDRICKSON, DO prescribe opioids?
Yes, MATILDE FREDRICKSON, DO had 116 opioid claims in 2023 with an opioid prescribing rate of 5.3%.
How many Addiction Medicine (Family Medicine) Physician providers are there in the US?
There are 763 Addiction Medicine (Family Medicine) Physician providers across 48 states in the US. The average Addiction Medicine (Family Medicine) Physician provider writes 1,134 Medicare Part D claims per year.
What drugs does MATILDE FREDRICKSON, DO prescribe most often?
Based on 2023 Medicare Part D data, MATILDE FREDRICKSON, DO's most frequently prescribed drugs include Atorvastatin Calcium, Buprenorphine-Naloxone, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MATILDE FREDRICKSON, DO accept Medicare?
MATILDE FREDRICKSON, DO appears in CMS Medicare data with 2,184 Part D claims and 283 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MATILDE FREDRICKSON, DO's credentials?
MATILDE FREDRICKSON, DO's NPI is 1770011348 with credentials DO. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology