2026 NPPES data Allergy & Immunology Physician NPI 1457549826 MD
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TIMOTHY PHAM, MD

Allergy & Immunology Physician in ARCADIA, 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
506
Medicare Part D claims · 92 beneficiaries · Allergy & Immunology Physician avg: 764
MIPS score
87.6531/100
▲ 5 pts above national avg 83.1 · [object Object]
Industry payments
$1.3K
69 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

TIMOTHY PHAM, MD reported a CMS MIPS final score of 87.6531/100 — above the 83.1 national average — and filed 506 Medicare Part D claims in 2023.

87.6531/100
MIPS score · +5 vs avg
506
Part D claims, 2023
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.

TIMOTHY PHAM, MD's MIPS score vs every scored U.S. clinician

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

88 Top 46% higher than 54% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 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)

TIMOTHY PHAM, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — 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 TIMOTHY PHAM, MD?

High performer (top quartile)

NPI registry status

Active

Issued 10/10/2007

NPI 1457549826

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Medicare Part D claims

506 34% vs specialty avg

2023 prescription claims

Specialty avg: 764

MIPS final score

87.6531/100 4.553100000000001% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Allergy & Immunology Physician compares to other specialties among California providers

California providers

Allergy & Immunology Physician share within California

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

Medicare quality performance — MIPS

TIMOTHY PHAM, MD's 2023 MIPS final score plotted against the Allergy & Immunology Physician national average

High performer (top quartile)
MIPS Final Score
87.6531/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Allergy & Immunology Physician) — 87.6531/100 vs national avg 83.1

0%100%National avg83%87.7%
MIPS final score (Allergy & Immunology Physician) — 87.6531/100 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).

TIMOTHY PHAM, MD appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding MD credentials at 301 W HUNTINGTON DR, ARCADIA, CA, 91007, with a listed phone of (626) 461-0360. NPI 1457549826 was issued on 10/10/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PHAM 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 506 prescription claims written by this provider, covering 92 Medicare beneficiaries and totaling roughly $146K in drug spend. 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 87.6531/100 for the 2023 performance year (Quality 79.2325, Cost 86.5338), compared with the national average of 83.1.

Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 enrolled providers across 52 states and an average of 764 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

301 W HUNTINGTON DR
ARCADIA, CA 91007

Provider Details

NPI 1457549826
Specialty Allergy & Immunology Physician
Credentials MD
Gender Male
NPI Issued 10/10/2007

CMS Quality Score (MIPS)

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

87.6531
Final Score
Avg: 83.1
79.2325
Quality
86.5338
Cost

Reporting: Individual

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 TIMOTHY PHAM, MD. Source: openpaymentsdata.cms.gov.

Total received

$1.3K

Largest payer

Regeneron Healthcare Solutions, 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 TIMOTHY PHAM, MD. To verify TIMOTHY PHAM, MD'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.

Medicare Part D Prescribing Data

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

506
Total Claims
$146K
Total Drug Cost
92
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
746
Total Day Supply
19,631
Generic Drug Cost
$10K
Antibiotic Claims
25

Patient Demographics

Average Patient Age
74.2 years
Avg HCC Risk Score
1.05
Gender Split
68% female / 32% male

Top Prescribed Drugs (Medicare Part D)

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

What TIMOTHY PHAM, MD 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
Albuterol Sulfate Hfa
Albuterol Sulfate
72
Arnuity Ellipta
Fluticasone Furoate
39
Ipratropium Bromide
37
Prednisone
34
Fluticasone Propionate
33
Azelastine Hcl
28
Spiriva Respimat
Tiotropium Bromide
27
Azithromycin
20
Breztri Aerosphere
Budesonide/Glycopyr/Formoterol
19
Montelukast Sodium
15

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

Allergy & Immunology Physician Overview

How TIMOTHY PHAM, MD fits within the Allergy & Immunology Physician landscape nationally.

3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider

TIMOTHY PHAM, MD's 506 claims are below the specialty average of 764.

Nearby Allergy & Immunology Physician Providers in California

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

Compare Allergy & Immunology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is TIMOTHY PHAM, MD's specialty?
TIMOTHY PHAM, MD specializes in Allergy & Immunology Physician and practices in ARCADIA, California. Credentials: MD.
How much does TIMOTHY PHAM, MD prescribe under Medicare Part D?
In 2023, TIMOTHY PHAM, MD wrote 506 Medicare Part D claims totaling $146K in drug costs for 92 beneficiaries.
What is TIMOTHY PHAM, MD's Medicare quality score?
TIMOTHY PHAM, MD has a CMS MIPS Final Score of 87.6531/100 (Quality: 79.2325, Cost: 86.5338). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is TIMOTHY PHAM, MD located?
TIMOTHY PHAM, MD is located at 301 W HUNTINGTON DR, ARCADIA, CA, 91007. Phone: (626) 461-0360.
What is TIMOTHY PHAM, MD's NPI number?
TIMOTHY PHAM, MD's National Provider Identifier (NPI) is 1457549826, issued on 10/10/2007.
How many Allergy & Immunology Physician providers are there in the US?
There are 3,390 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does TIMOTHY PHAM, MD prescribe most often?
Based on 2023 Medicare Part D data, TIMOTHY PHAM, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Arnuity Ellipta, Ipratropium Bromide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TIMOTHY PHAM, MD accept Medicare?
TIMOTHY PHAM, MD appears in CMS Medicare data with 506 Part D claims and 92 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TIMOTHY PHAM, MD's credentials?
TIMOTHY PHAM, MD's NPI is 1457549826 with credentials MD. 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