NPI registry status
Active
2026 NPPES data Surgery Physician NPI 1174622617 MD PHD
Verify on CMS → Darrow Haagensen, MD PHD
Surgery Physician in Sacramento, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 36,191 in Surgery Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
300
Medicare Part D claims · 68 beneficiaries · Surgery Physician avg: 169
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Darrow Haagensen, MD PHD filed 300 Medicare Part D claims in 2023 as a Surgery Physician in Sacramento, California, prescribing 95% generic.
- 300
- Part D claims, 2023
- 95%
- 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.
Darrow Haagensen, MD PHD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
300 Top 43% higher than 57% of 1,370,886 prescribers
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)
Darrow Haagensen, MD PHD 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 Darrow Haagensen, MD PHD?
Quality data not reportedPrimary specialty
Surgery Physician
Medicare Part D claims
300 78% vs specialty avg
Specialty distribution in California
How Surgery Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Surgery Physician. Verify directly:
How MIPS and board certification work
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).
Darrow Haagensen, MD PHD appears in the CMS NPPES registry as a Surgery Physician provider holding MD PHD credentials at 7248 SOUTH LAND PARK DRIVE SUITE 112, Sacramento, CA, 95831, with a listed phone of (916) 424-8916. NPI 1174622617 was issued on 09/21/2006.
Medicare Part D records for calendar year 2023 show 300 prescription claims written by this provider, covering 68 Medicare beneficiaries and totaling roughly $35K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 4.3%.
Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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
Provider Details
| NPI | 1174622617 |
|---|---|
| Specialty | Surgery Physician |
| Credentials | MD PHD |
| Gender | Male |
| NPI Issued | 09/21/2006 |
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 Darrow Haagensen, MD PHD. To verify Darrow Haagensen, MD PHD'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
Darrow Haagensen, MD PHD - brand share 5.0%
Surgery Physician average
5% brand-name claims vs 95% generic, on 300 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.
300
Total Claims
$35K
Total Drug Cost
68
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 605
- Total Day Supply
- 17,090
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $27K
- Generic Drug Cost
- $8K
- Opioid Claims
- 13 (4.3% rate)
- Antibiotic Claims
- 21
Patient Demographics
- Average Patient Age
- 75.9 years
- Avg HCC Risk Score
- 1.25
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Darrow Haagensen, MD PHD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
195 claims
- Letrozole 24
Letrozole
24 claims
- Raloxifene Hcl 22
Raloxifene Hcl
22 claims
- Cephalexin 17
Cephalexin
17 claims
- Tramadol Hcl 13
Tramadol Hcl
13 claims
| Drug | Claims |
|---|---|
| Anastrozole | 195 |
| Letrozole | 24 |
| Raloxifene Hcl | 22 |
| Cephalexin | 17 |
| Tramadol Hcl | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgery Physician Overview
How Darrow Haagensen, MD PHD fits within the Surgery Physician landscape nationally.
36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider
Darrow Haagensen, MD PHD's 300 claims are above the specialty average of 169.
Nearby Surgery Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Haagensen.
Dr. Oliver Aalami
M.D.
Stanford, CA
Dr. Shahram Aarabi
MD
Oakland, CA
Dr. Miriam Abaunza
M.D.
Los Angeles, CA
Dr. Benjamin Abbadessa
M.D.
San Diego, CA
Abdul-Rahman Abdel-Reheem
Los Angeles, CA
Compare Surgery Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Darrow Haagensen, MD PHD's specialty? ▼
Darrow Haagensen, MD PHD specializes in Surgery Physician and practices in Sacramento, California. Credentials: MD PHD.
How much does Darrow Haagensen, MD PHD prescribe under Medicare Part D? ▼
In 2023, Darrow Haagensen, MD PHD wrote 300 Medicare Part D claims totaling $35K in drug costs for 68 beneficiaries.
Where is Darrow Haagensen, MD PHD located? ▼
Darrow Haagensen, MD PHD is located at 7248 SOUTH LAND PARK DRIVE SUITE 112, Sacramento, CA, 95831. Phone: (916) 424-8916.
What is Darrow Haagensen, MD PHD's NPI number? ▼
Darrow Haagensen, MD PHD's National Provider Identifier (NPI) is 1174622617, issued on 09/21/2006.
Does Darrow Haagensen, MD PHD prescribe more brand-name or generic drugs? ▼
Darrow Haagensen, MD PHD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $27K in brand drug costs.
Does Darrow Haagensen, MD PHD prescribe opioids? ▼
Yes, Darrow Haagensen, MD PHD had 13 opioid claims in 2023 with an opioid prescribing rate of 4.3%.
How many Surgery Physician providers are there in the US? ▼
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does Darrow Haagensen, MD PHD prescribe most often? ▼
Based on 2023 Medicare Part D data, Darrow Haagensen, MD PHD's most frequently prescribed drugs include Anastrozole, Letrozole, Raloxifene Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Darrow Haagensen, MD PHD accept Medicare? ▼
Darrow Haagensen, MD PHD appears in CMS Medicare data with 300 Part D claims and 68 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Darrow Haagensen, MD PHD's credentials? ▼
Darrow Haagensen, MD PHD's NPI is 1174622617 with credentials MD PHD. 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.