2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1225059306 M.D.
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PARHAM GHARAGOZLOU, M.D.

Sleep Medicine (Internal Medicine) Physician in CONCORD, 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 · 206 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

PARHAM GHARAGOZLOU, M.D. filed 2,855 Medicare Part D claims in 2023 as a Sleep Medicine (Internal Medicine) Physician in CONCORD, California, prescribing 87% generic.

3K
Part D claims, 2023
87%
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.

PARHAM GHARAGOZLOU, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

2,855 Top 12% higher than 88% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

PARHAM GHARAGOZLOU, 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).

What does the federal data show about PARHAM GHARAGOZLOU, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/22/2006

NPI 1225059306

Primary specialty

Sleep Medicine (Internal Medicine) Physician

Niche

857 US NPIs in this specialty

Medicare Part D claims

2,855 118% vs specialty avg

2023 prescription claims

Specialty avg: 1,310

Specialty distribution in California

How Sleep Medicine (Internal Medicine) Physician compares to other specialties among California providers

California providers

Sleep Medicine (Internal Medicine) Physician share within California

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

Specialty board-certification context

Estimated specialty board-certified rate — Sleep Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Sleep Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Sleep Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Sleep Medicine (Internal Medicine) 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).

PARHAM GHARAGOZLOU, M.D. appears in the CMS NPPES registry as a Sleep Medicine (Internal Medicine) Physician provider holding M.D. credentials at 3108 WILLOW PASS RD, CONCORD, CA, 94519, with a listed phone of (925) 849-6634. NPI 1225059306 was issued on 07/22/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GHARAGOZLOU 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 2,855 prescription claims written by this provider, covering 206 Medicare beneficiaries and totaling roughly $323K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 0.7%. 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.

Sleep Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 857 enrolled providers across 52 states and an average of 1,310 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

3108 WILLOW PASS RD
CONCORD, CA 94519

Provider Details

NPI 1225059306
Specialty Sleep Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 07/22/2006

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 PARHAM GHARAGOZLOU, M.D.. To verify PARHAM GHARAGOZLOU, 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 · Typical

PARHAM GHARAGOZLOU, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 2,855 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.

2,855
Total Claims
$323K
Total Drug Cost
206
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,234
Total Day Supply
213,838
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$229K
Generic Drug Cost
$92K
Opioid Claims
21 (0.7% rate)
Antibiotic Claims
35

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
1.13
Gender Split
55% female / 45% male
Age Distribution
<65: 12, 65-74: 116, 75-84: 57, 85+: 21

Top Prescribed Drugs (Medicare Part D)

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

What PARHAM GHARAGOZLOU, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
330
Amlodipine Besylate
242
Losartan Potassium
157
Metformin Hcl
152
Levothyroxine Sodium
120
Lisinopril
101
Gabapentin
79
Tamsulosin Hcl
72
Alendronate Sodium
57
Metoprolol Tartrate
52

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

Sleep Medicine (Internal Medicine) Physician Overview

How PARHAM GHARAGOZLOU, M.D. fits within the Sleep Medicine (Internal Medicine) Physician landscape nationally.

857
Sleep Medicine (Internal Medicine) Physician Providers in US
52
States with Sleep Medicine (Internal Medicine) Physician
1,310
Avg Claims per Provider

PARHAM GHARAGOZLOU, M.D.'s 2,855 claims are above the specialty average of 1,310.

Nearby Sleep Medicine (Internal Medicine) Physician Providers in California

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

Compare Sleep Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is PARHAM GHARAGOZLOU, M.D.'s specialty?
PARHAM GHARAGOZLOU, M.D. specializes in Sleep Medicine (Internal Medicine) Physician and practices in CONCORD, California. Credentials: M.D..
How much does PARHAM GHARAGOZLOU, M.D. prescribe under Medicare Part D?
In 2023, PARHAM GHARAGOZLOU, M.D. wrote 2,855 Medicare Part D claims totaling $323K in drug costs for 206 beneficiaries.
Where is PARHAM GHARAGOZLOU, M.D. located?
PARHAM GHARAGOZLOU, M.D. is located at 3108 WILLOW PASS RD, CONCORD, CA, 94519. Phone: (925) 849-6634.
What is PARHAM GHARAGOZLOU, M.D.'s NPI number?
PARHAM GHARAGOZLOU, M.D.'s National Provider Identifier (NPI) is 1225059306, issued on 07/22/2006.
Does PARHAM GHARAGOZLOU, M.D. prescribe more brand-name or generic drugs?
PARHAM GHARAGOZLOU, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $229K in brand drug costs.
Does PARHAM GHARAGOZLOU, M.D. prescribe opioids?
Yes, PARHAM GHARAGOZLOU, M.D. had 21 opioid claims in 2023 with an opioid prescribing rate of 0.7%.
How many Sleep Medicine (Internal Medicine) Physician providers are there in the US?
There are 857 Sleep Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Sleep Medicine (Internal Medicine) Physician provider writes 1,310 Medicare Part D claims per year.
What drugs does PARHAM GHARAGOZLOU, M.D. prescribe most often?
Based on 2023 Medicare Part D data, PARHAM GHARAGOZLOU, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PARHAM GHARAGOZLOU, M.D. accept Medicare?
PARHAM GHARAGOZLOU, M.D. appears in CMS Medicare data with 2,855 Part D claims and 206 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PARHAM GHARAGOZLOU, M.D.'s credentials?
PARHAM GHARAGOZLOU, M.D.'s NPI is 1225059306 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