2026 NPPES data Internal Medicine Physician NPI 1558497891 M.D.
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GHASSAN HADI, M.D.

Internal Medicine Physician in UPLAND, 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
9K
Medicare Part D claims · 453 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
14.3891/100
▼ 69 pts below national avg 83.1 · [object Object]
Industry payments
$113.96
5 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

GHASSAN HADI, M.D. reported a CMS MIPS final score of 14.3891/100 — below the 83.1 national average — and filed 9,386 Medicare Part D claims in 2023.

14.3891/100
MIPS score · -69 vs avg
9K
Part D claims, 2023
85%
generic prescribing
Likely
board-certified (heuristic)

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.

GHASSAN HADI, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

14 2nd percentile higher than 2% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). This entry sits in this band. 20–30: 3,069 scored providers (1%). Above this entry. 30–40: 2,746 scored providers (1%). Above this entry. 40–50: 2,928 scored providers (1%). Above this entry. 50–60: 5,882 scored providers (1%). Above this entry. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

GHASSAN HADI, M.D. 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).

What does the federal data show about GHASSAN HADI, M.D.?

Below national average

NPI registry status

Active

Issued 02/23/2007

NPI 1558497891

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

9,386 246% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

14.3891/100 68.7109% pts

Penalty band band

vs 83.1 national avg

Specialty distribution in California

How Internal Medicine Physician compares to other specialties among California providers

California providers

Internal Medicine Physician share within California

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

Medicare quality performance — MIPS

GHASSAN HADI, M.D.'s 2023 MIPS final score plotted against the Internal Medicine Physician national average

Below national average
MIPS Final Score
14.3891/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 14.3891/100 vs national avg 83.1

0%100%National avg83%14.4%
MIPS final score (Internal Medicine Physician) — 14.3891/100 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).

GHASSAN HADI, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 1060 E FOOTHILL BLVD, UPLAND, CA, 91786, with a listed phone of (909) 981-8904. NPI 1558497891 was issued on 02/23/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HADI 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 9,386 prescription claims written by this provider, covering 453 Medicare beneficiaries and totaling roughly $855K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 4.4%. 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 14.3891/100 for the 2023 performance year (Quality 0, Cost 47.9636), compared with the national average of 83.1.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

1060 E FOOTHILL BLVD
UPLAND, CA 91786

Provider Details

NPI 1558497891
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 02/23/2007

CMS Quality Score (MIPS)

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

14.3891
Final Score
Avg: 83.1
0
Quality
47.9636
Cost

Reporting: Individual

Hospital and facility affiliations

Facilities where GHASSAN HADI, M.D. 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.

GHASSAN HADI MD INC
UPLAND, 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).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for GHASSAN HADI, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$114

Largest payer

Phathom Pharmaceuticals, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 GHASSAN HADI, M.D.. To verify GHASSAN HADI, 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

GHASSAN HADI, M.D. — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 9,386 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.

9,386
Total Claims
$855K
Total Drug Cost
453
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,862
Total Day Supply
333,400
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$610K
Generic Drug Cost
$238K
Opioid Claims
411 (4.4% rate)
Antibiotic Claims
262

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
2.18
Gender Split
60% female / 40% male
Age Distribution
<65: 58, 65-74: 202, 75-84: 117, 85+: 76

Top Prescribed Drugs (Medicare Part D)

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

What GHASSAN HADI, 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
537
Eliquis
Apixaban
285
Levothyroxine Sodium
261
Metformin Hcl
226
Losartan Potassium
206
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
205
Gabapentin
190
Amlodipine Besylate
179
Pantoprazole Sodium
169
Tamsulosin Hcl
164

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

Internal Medicine Physician Overview

How GHASSAN HADI, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

GHASSAN HADI, M.D.'s 9,386 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in California

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

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

Frequently Asked Questions

What is GHASSAN HADI, M.D.'s specialty?
GHASSAN HADI, M.D. specializes in Internal Medicine Physician and practices in UPLAND, California. Credentials: M.D..
How much does GHASSAN HADI, M.D. prescribe under Medicare Part D?
In 2023, GHASSAN HADI, M.D. wrote 9,386 Medicare Part D claims totaling $855K in drug costs for 453 beneficiaries.
What is GHASSAN HADI, M.D.'s Medicare quality score?
GHASSAN HADI, M.D. has a CMS MIPS Final Score of 14.3891/100 (Quality: 0, Cost: 47.9636). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GHASSAN HADI, M.D. located?
GHASSAN HADI, M.D. is located at 1060 E FOOTHILL BLVD, UPLAND, CA, 91786. Phone: (909) 981-8904.
What is GHASSAN HADI, M.D.'s NPI number?
GHASSAN HADI, M.D.'s National Provider Identifier (NPI) is 1558497891, issued on 02/23/2007.
Does GHASSAN HADI, M.D. prescribe more brand-name or generic drugs?
GHASSAN HADI, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $610K in brand drug costs.
Does GHASSAN HADI, M.D. prescribe opioids?
Yes, GHASSAN HADI, M.D. had 411 opioid claims in 2023 with an opioid prescribing rate of 4.4%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does GHASSAN HADI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GHASSAN HADI, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Eliquis, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GHASSAN HADI, M.D. accept Medicare?
GHASSAN HADI, M.D. appears in CMS Medicare data with 9,386 Part D claims and 453 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GHASSAN HADI, M.D.'s credentials?
GHASSAN HADI, M.D.'s NPI is 1558497891 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.
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