Dr. Darren R. Haskell, MD
- Medicare services, 2024
- 2,276
- Medicare patients, 2024
- 446
- Part D claims, 2024
- 12,317
- MIPS score, 2024
- 93
- Hospital affiliations
- 6
- Practice address
- 226 S Woods Mill Rd Suite 43w Suite 43w, Chesterfield, MO 63017-3663
- Practice phone
- Call (314) 205-6444
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Chesterfield Internal Medicine And Rheumatology
Primary care practice · Chesterfield, Missouri
Find Dr. Haskell's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Darren R. Haskell is an internist in Chesterfield, Missouri
Dr. Haskell practices at Chesterfield Internal Medicine And Rheumatology in Chesterfield, Missouri.
Dr. Haskell's NPI, 1689636813, was assigned on April 4, 2006. Dr. Haskell graduated from Wake Forest University School of Medicine in 1996. Dr. Haskell holds Missouri license 2001025776.
- NPI
- 1689636813NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961499488
- NPI enumeration date
- April 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 205-6444
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Darren R. Haskell practices at Chesterfield Internal Medicine and Rheumatology in Chesterfield, Missouri
Dr. Haskell's primary practice is Chesterfield Internal Medicine and Rheumatology, at 226 S Woods Mill Rd Suite 43w Suite 43w, Chesterfield, MO 63017-3663. The practice phone is (314) 205-6444.
- Chesterfield Internal Medicine and Rheumatology226 S Woods Mill Rd Suite 43w Suite 43w, Chesterfield, MO 63017-3663Phone(314) 205-6444
Source: Dmand AI Affiliation Data
Dr. Darren R. Haskell is affiliated with 10 sites of care and 1 medical group
Dr. Haskell's primary practice is Chesterfield Internal Medicine And Rheumatology in Chesterfield, Missouri. Dr. Haskell is also affiliated with St. Luke's Hospital. The medical group on file is St. Luke's Chesterfield Internal Medicine and Rheumatology. Dmand AI also links Dr. Haskell to 5 more hospitals, 2 skilled nursing facilities and 1 home health agency, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Darren R. Haskell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Haskell practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Chesterfield Internal Medicine And Rheumatology | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Darren R. Haskell is one of 2,114 internists in Missouri
Internal medicine is Dr. Haskell's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Haskell is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Haskell
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Darren R. Haskell billed Medicare for 2,276 services in 2024
CMS data shows 2,276 Medicare services from Dr. Haskell across 13 procedure codes in 2024, for 446 Medicare patients. Medicare paid $140,085 for them.
Dr. Haskell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,1482024: 1,0618%
- Other services
- 2023: 552024: 9141562%
- Tests and treatments
- 2023: 1752024: 30172%
Where Dr. Haskell's Medicare services took place, 2024
- In an office1,98787%
- In a facility28913%
Dr. Haskell compared with the Missouri median for internists, 2024
- Dr. Haskell
- Missouri median
- Medicare services
- 2,276vs 5304.3 times
- Medicare patients
- 446vs 2112.1 times
- Part D claims
- 11,631vs 32535.8 times
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Haskell's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Haskell?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Haskell and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Darren R. Haskell treated 446 Medicare patients in 2024, average age 77
CMS counts 446 Medicare patients who saw Dr. Haskell in 2024. The largest group is 65 to 74, with 170 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.01, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Haskell's median patient age at 75, with 46% women.
Dr. Haskell's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Haskell's Medicare patients by sex, 2024
- Women22350%
- Men22350%
Chronic conditions among Dr. Haskell's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Ischemic heart disease29%
- Chronic kidney disease23%
- Atrial fibrillation22%
- Cancer22%
- Mood disorders20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Haskell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Darren R. Haskell wrote 12,317 Medicare Part D claims in 2024
In 2024, Dr. Haskell wrote 12,317 Medicare Part D claims for 873 patients. 89% of them were for generic drugs. CMS names the drug for 11,631 of them, across 143 drugs with 11 or more claims each, at $851,292 in total drug cost. In 2023, CMS named 11,015 claims across 141 drugs.
Dr. Haskell's Part D claims by kind of drug, 2024
- Generic10,954 claims89%
- Brand-name1,352 claims11%
- Other11 claims0%
Dr. Haskell's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Haskell's Part D claims, 2024
- Opioids2%188 of 12,317 claims
- Antibiotics2%198 of 12,317 claims
- Antipsychotics, patients 65 and over0%50 of 12,317 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 11,0152024: 11,6316%
Drugs named by CMS: 143 in 2024, 141 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Darren R. Haskell scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Haskell for performance year 2024, reported through an alternative payment model (APM). Dr. Haskell accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Haskell as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Haskell's MIPS scores, performance year 2024
- 93of 100Final score
- 82.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Darren R. Haskell received $11,626 in industry payments from 2016 to 2025
CMS Open Payments shows 789 general payments to Dr. Haskell from 48 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Pfizer Inc. paid the most, $1,516.
General payments to Dr. Haskell by program year, 2016 to 2025
General payments to Dr. Haskell by kind, 2016 to 2025
- Food and beverage$11,24397%
- Education$3843%
Companies that paid Dr. Haskell the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Darren R. Haskell graduated from Wake Forest University School of Medicine
Dr. Haskell graduated from Wake Forest University School of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Darren R. Haskell's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Darren R. Haskell
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Darren R. Haskell's NPI number?
Dr. Darren R. Haskell's NPI number is 1689636813. It was assigned on April 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Darren R. Haskell?
Dr. Darren R. Haskell is an internist in Chesterfield, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Darren R. Haskell practice?
Dr. Haskell practices at 226 S Woods Mill Rd Suite 43w Suite 43w, Chesterfield, MO 63017-3663. Dr. Haskell's primary practice is Chesterfield Internal Medicine And Rheumatology in Chesterfield, Missouri. Dmand AI also links Dr. Haskell to 5 hospitals, 2 skilled nursing facilities and 1 home health agency.
What is Dr. Darren R. Haskell's office phone number?
The practice phone on file for Dr. Haskell is (314) 205-6444.
What is Dr. Darren R. Haskell's medical license number?
Dr. Haskell holds Missouri license 2001025776.
Which hospitals is Dr. Darren R. Haskell affiliated with?
Dr. Haskell is affiliated with St. Luke's Hospital. Dmand AI links Dr. Haskell to 5 more hospitals.
What medical group is Dr. Darren R. Haskell part of?
Dr. Haskell is linked to St. Luke's Chesterfield Internal Medicine and Rheumatology.
Does Dr. Darren R. Haskell accept Medicare?
Yes. CMS data shows Dr. Haskell billed Medicare for 2,276 services in 2024, and Dr. Haskell accepts Medicare assignment.
Does Dr. Darren R. Haskell offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Haskell as offering telehealth services.
What is Dr. Darren R. Haskell's MIPS score?
Dr. Haskell's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Darren R. Haskell see?
CMS counts 446 Medicare patients who saw Dr. Haskell in 2024, with an average age of 77.
What services does Dr. Darren R. Haskell bill to Medicare?
In 2024, Dr. Haskell's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and vaccine or vaccine administration (90677).
Where did Dr. Darren R. Haskell go to medical school?
Dr. Haskell graduated from Wake Forest University School of Medicine in 1996.
What drugs does Dr. Darren R. Haskell prescribe most?
In 2024 Medicare Part D data, Dr. Haskell's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Rosuvastatin Calcium.
Has Dr. Darren R. Haskell received payments from drug or device companies?
CMS Open Payments shows $11,626 in general payments to Dr. Haskell from 48 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Darren R. Haskell been practicing?
Dr. Haskell graduated from medical school in 1996, 30 years ago.
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