2026 NPPES data Chiropractor NPI 1326127820 D.C., PA-C
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HAMID HASSANZADEH, D.C., PA-C

Chiropractor in RED BLUFF, 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
4K
Medicare Part D claims · 514 beneficiaries · Chiropractor avg: 824
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
78.2877/100
▼ 5 pts below national avg 83.1 · [object Object]
What the federal data reveals: HAMID HASSANZADEH, D.C., PA-C is a Chiropractor ([object Object]) practicing in RED BLUFF, California with a Medicare Part D prescribing footprint of 4K claims across 514 beneficiaries — 12% brand-name prescribing . Their CMS MIPS Final Score of 78.2877/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What the federal data shows

HAMID HASSANZADEH, D.C., PA-C reported a CMS MIPS final score of 78.2877/100 — below the 83.1 national average — and filed 3,622 Medicare Part D claims in 2023.

78.2877/100
MIPS score · -5 vs avg
4K
Part D claims, 2023
88%
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.

HAMID HASSANZADEH, D.C., PA-C's MIPS score vs every scored U.S. clinician

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

78 27th percentile higher than 27% 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%). This entry sits in this band. 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

HAMID HASSANZADEH, D.C., PA-C at a glance

Near national average

NPI registry status

Active

Issued 11/03/2006

NPI 1326127820

Primary specialty

Chiropractor

High-volume

95,153 US NPIs in this specialty

Medicare Part D claims

3,622 340% vs specialty avg

2023 prescription claims

Specialty avg: 824

MIPS final score

78.2877/100 4.812299999999993% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Chiropractor compares to other specialties among California providers

California providers

Chiropractor share within California

1. Chiropractor42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Chiropractor share within California

Medicare quality performance — MIPS

HAMID HASSANZADEH, D.C., PA-C's 2023 MIPS final score plotted against the Chiropractor national average

Near national average
MIPS Final Score
78.2877/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Chiropractor) — 78.2877/100 vs national avg 83.1

0%100%National avg83%78.3%
MIPS final score (Chiropractor) — 78.2877/100 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).

HAMID HASSANZADEH, D.C., PA-C is a Chiropractor provider practicing in RED BLUFF, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.C., PA-C. NPI: 1326127820. 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.

HAMID HASSANZADEH, D.C., PA-C appears in the CMS NPPES registry as a Chiropractor provider holding D.C., PA-C credentials at 2450 SISTER MARY COLUMBA DR, RED BLUFF, CA, 96080, with a listed phone of (530) 527-0414. NPI 1326127820 was issued on 11/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HASSANZADEH 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 3,622 prescription claims written by this provider, covering 514 Medicare beneficiaries and totaling roughly $271K in drug spend, split 12% brand-name and 88% generic by claim count. 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 78.2877/100 for the 2023 performance year (Quality 71.3135, Cost 45.479), compared with the national average of 83.1.

Chiropractor is a high-volume specialty nationwide, with 95,153 enrolled providers across 56 states and an average of 824 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

2450 SISTER MARY COLUMBA DR
RED BLUFF, CA 96080

Provider Details

NPI 1326127820
Specialty Chiropractor
Credentials D.C., PA-C
Gender Male
NPI Issued 11/03/2006

CMS Quality Score (MIPS)

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

78.2877
Final Score
Avg: 83.1
71.3135
Quality
45.479
Cost
93
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where HAMID HASSANZADEH, D.C., PA-C 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.

HOSPITAL MEDICINE SERVICES OF NH, LLC
ROCHESTER, NH
SPEARE HEALTH VENTURES INC
PLYMOUTH, NH

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 HAMID HASSANZADEH, D.C., PA-C. To verify HAMID HASSANZADEH, D.C., PA-C'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

HAMID HASSANZADEH, D.C., PA-C — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 3,622 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.

3,622
Total Claims
$271K
Total Drug Cost
514
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,657
Total Day Supply
132,744
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$214K
Generic Drug Cost
$56K
Antibiotic Claims
92

Patient Demographics

Average Patient Age
69.0 years
Avg HCC Risk Score
1.24
Gender Split
57% female / 43% male
Age Distribution
<65: 119, 65-74: 248, 75-84: 104, 85+: 43

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
223
Lisinopril
204
Levothyroxine Sodium
192
Amlodipine Besylate
185
Losartan Potassium
126
Metformin Hcl
102
Omeprazole
102
Gabapentin
92
Albuterol Sulfate Hfa
Albuterol Sulfate
91
Trazodone Hcl
73

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

Chiropractor Overview

How HAMID HASSANZADEH, D.C., PA-C fits within the Chiropractor landscape nationally.

95,153
Chiropractor Providers in US
56
States with Chiropractor
824
Avg Claims per Provider

HAMID HASSANZADEH, D.C., PA-C's 3,622 claims are above the specialty average of 824.

Nearby Chiropractor Providers in California

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

Compare Chiropractor nationally: see state-by-state distribution →

Frequently Asked Questions

What is HAMID HASSANZADEH, D.C., PA-C's specialty?
HAMID HASSANZADEH, D.C., PA-C specializes in Chiropractor and practices in RED BLUFF, California. Credentials: D.C., PA-C.
How much does HAMID HASSANZADEH, D.C., PA-C prescribe under Medicare Part D?
In 2023, HAMID HASSANZADEH, D.C., PA-C wrote 3,622 Medicare Part D claims totaling $271K in drug costs for 514 beneficiaries.
What is HAMID HASSANZADEH, D.C., PA-C's Medicare quality score?
HAMID HASSANZADEH, D.C., PA-C has a CMS MIPS Final Score of 78.2877/100 (Quality: 71.3135, Cost: 45.479). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is HAMID HASSANZADEH, D.C., PA-C located?
HAMID HASSANZADEH, D.C., PA-C is located at 2450 SISTER MARY COLUMBA DR, RED BLUFF, CA, 96080. Phone: (530) 527-0414.
What is HAMID HASSANZADEH, D.C., PA-C's NPI number?
HAMID HASSANZADEH, D.C., PA-C's National Provider Identifier (NPI) is 1326127820, issued on 11/03/2006.
Does HAMID HASSANZADEH, D.C., PA-C prescribe more brand-name or generic drugs?
HAMID HASSANZADEH, D.C., PA-C's prescribing is 12% brand-name and 88% generic drugs by claim count, with $214K in brand drug costs.
How many Chiropractor providers are there in the US?
There are 95,153 Chiropractor providers across 56 states in the US. The average Chiropractor provider writes 824 Medicare Part D claims per year.
What drugs does HAMID HASSANZADEH, D.C., PA-C prescribe most often?
Based on 2023 Medicare Part D data, HAMID HASSANZADEH, D.C., PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HAMID HASSANZADEH, D.C., PA-C accept Medicare?
HAMID HASSANZADEH, D.C., PA-C appears in CMS Medicare data with 3,622 Part D claims and 514 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HAMID HASSANZADEH, D.C., PA-C's credentials?
HAMID HASSANZADEH, D.C., PA-C's NPI is 1326127820 with credentials D.C., PA-C. 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