2026 NPPES data General Practice Physician NPI 1679587091 M.D.
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DEAN FERDOWS, M.D.

General Practice Physician in MAYWOOD, 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
3K
Medicare Part D claims · 207 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: DEAN FERDOWS, M.D. is a General Practice Physician ([object Object]) practicing in MAYWOOD, California with a Medicare Part D prescribing footprint of 3K claims across 207 beneficiaries — 9% brand-name prescribing .

What the federal data shows

DEAN FERDOWS, M.D. filed 3,033 Medicare Part D claims in 2023 as a General Practice Physician in MAYWOOD, California, prescribing 91% generic.

3K
Part D claims, 2023
91%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

Board-eligible specialty (heuristic — not verified)

DEAN FERDOWS, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

DEAN FERDOWS, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/28/2006

NPI 1679587091

Primary specialty

General Practice Physician

Mid-sized

16,677 US NPIs in this specialty

Medicare Part D claims

3,033 6% vs specialty avg

2023 prescription claims

Specialty avg: 2,872

Specialty distribution in California

How General Practice Physician compares to other specialties among California providers

California providers

General Practice Physician share within California

1. General Practice Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
General Practice Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — General Practice Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
General Practice Physician ABMS/AOA estimate

Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate

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).

DEAN FERDOWS, M.D. is a General Practice Physician provider practicing in MAYWOOD, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1679587091. 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.

DEAN FERDOWS, M.D. appears in the CMS NPPES registry as a General Practice Physician provider holding M.D. credentials at 4316 SLAUSON AVE, MAYWOOD, CA, 90270, with a listed phone of (323) 773-2020. NPI 1679587091 was issued on 07/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FERDOWS 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 3,033 prescription claims written by this provider, covering 207 Medicare beneficiaries and totaling roughly $249K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 1.2%. 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.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 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

4316 SLAUSON AVE
MAYWOOD, CA 90270

Provider Details

NPI 1679587091
Specialty General Practice Physician
Credentials M.D.
Gender Male
NPI Issued 07/28/2006

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 DEAN FERDOWS, M.D.. To verify DEAN FERDOWS, M.D.'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 · Generic-heavy

DEAN FERDOWS, M.D. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 3,033 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.

3,033
Total Claims
$249K
Total Drug Cost
207
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,826
Total Day Supply
196,887
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$177K
Generic Drug Cost
$71K
Opioid Claims
35 (1.2% rate)
Antibiotic Claims
153

Patient Demographics

Average Patient Age
71.8 years
Avg HCC Risk Score
1.22
Gender Split
52% female / 48% male
Age Distribution
<65: 26, 65-74: 107, 75-84: 58, 85+: 16

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Metformin Hcl
233
Glipizide
173
Atorvastatin Calcium
170
Losartan Potassium
165
Amlodipine Besylate
149
Hydrochlorothiazide
141
Omeprazole
135
Lisinopril
125
Simvastatin
118
Pravastatin Sodium
87

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

General Practice Physician Overview

How DEAN FERDOWS, M.D. fits within the General Practice Physician landscape nationally.

16,677
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider

DEAN FERDOWS, M.D.'s 3,033 claims are above the specialty average of 2,872.

Nearby General Practice Physician Providers in California

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

Compare General Practice Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DEAN FERDOWS, M.D.'s specialty?
DEAN FERDOWS, M.D. specializes in General Practice Physician and practices in MAYWOOD, California. Credentials: M.D..
How much does DEAN FERDOWS, M.D. prescribe under Medicare Part D?
In 2023, DEAN FERDOWS, M.D. wrote 3,033 Medicare Part D claims totaling $249K in drug costs for 207 beneficiaries.
Where is DEAN FERDOWS, M.D. located?
DEAN FERDOWS, M.D. is located at 4316 SLAUSON AVE, MAYWOOD, CA, 90270. Phone: (323) 773-2020.
What is DEAN FERDOWS, M.D.'s NPI number?
DEAN FERDOWS, M.D.'s National Provider Identifier (NPI) is 1679587091, issued on 07/28/2006.
Does DEAN FERDOWS, M.D. prescribe more brand-name or generic drugs?
DEAN FERDOWS, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $177K in brand drug costs.
Does DEAN FERDOWS, M.D. prescribe opioids?
Yes, DEAN FERDOWS, M.D. had 35 opioid claims in 2023 with an opioid prescribing rate of 1.2%.
How many General Practice Physician providers are there in the US?
There are 16,677 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does DEAN FERDOWS, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DEAN FERDOWS, M.D.'s most frequently prescribed drugs include Metformin Hcl, Glipizide, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DEAN FERDOWS, M.D. accept Medicare?
DEAN FERDOWS, M.D. appears in CMS Medicare data with 3,033 Part D claims and 207 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DEAN FERDOWS, M.D.'s credentials?
DEAN FERDOWS, M.D.'s NPI is 1679587091 with credentials M.D.. 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.
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