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Dr. Dennis E. Cramer, DO
NPI1336353341PAC ID6103909353
- Medicare services, 2024
- 2,336
- Medicare patients, 2026
- 142
- Part D claims, 2026
- 119
- Publications
- 4
- Hospital affiliations
- 2
- Practice address
- 6276 River Crest Dr, Riverside, CA 92507
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Haider Spine Center Medical Group Inc
Riverside, California
Find Dr. Cramer'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. Dennis E. Cramer is a neurosurgeon in Riverside, California
Dr. Cramer practices at Haider Spine Center Medical Group Inc in Riverside, California.
Dr. Cramer's NPI, 1336353341, was assigned on May 9, 2007. Dr. Cramer graduated from University Of Cincinnati College Of Medicine in 2001. Dr. Cramer holds California license 20A8197.
NPI and contact details
- NPI
- 1336353341NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103909353
- NPI enumeration date
- May 9, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dennis E. Cramer practices at Haider Spine Center Medical Group Inc in Riverside, California
Dr. Cramer's primary practice is Haider Spine Center Medical Group Inc, at 6276 River Crest Dr, Riverside, CA 92507 in Riverside County.
- Haider Spine Center Medical Group Inc6276 River Crest Dr, Riverside, CA 92507 · Riverside County
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Dennis E. Cramer is affiliated with 4 sites of care and 2 medical groups
Dr. Cramer's primary practice is Haider Spine Center Medical Group Inc in Riverside, California. Dr. Cramer is also affiliated with Riverside Community Hospital. The medical group on file is Haider Spine Center. Dmand AI also links Dr. Cramer to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Haider Spine Center Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Dennis E. Cramer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cramer practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Haider Spine Center Medical Group Inc | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dennis E. Cramer is one of 846 neurosurgeons in California
Neurological surgery is Dr. Cramer's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Cramer is board certified in neurological surgery by the AOA Board of Surgery. Dmand AI has Dr. Cramer's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Neurological surgery, CaliforniaPrimary
- Ohio license
Clinical focus
Dmand AI lists lower back pain, neck pain and spine problems, spinal fusion and thoracic spine disorders among the conditions Dr. Cramer treats.
Neurosurgeons near Dr. Cramer
Counts of neurosurgeons 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. Dennis E. Cramer billed Medicare for 2,336 services in 2024
CMS data shows 2,336 Medicare services from Dr. Cramer across 12 procedure codes in 2024, for 142 Medicare patients. Medicare paid $75,230 for them.
Medicare services, 20242,336
Medicare patients142
Paid by Medicare$75,230
Procedure codes12
Dr. Cramer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1,5092024: 1,88125%
- Office and hospital visits
- 2023: 2332024: 2528%
- Imaging
- 2023: 1422024: 1327%
- Surgery
- 2023: 122024: 71492%
- Drugs given in the office
- 2023: 172024: 0100%
Where Dr. Cramer's Medicare services took place, 2024
- In an office2,30599%
- In a facility311%
Dr. Cramer compared with the California median for neurosurgeons, 2024
- Dr. Cramer
- California median
- Medicare services
- 2,336vs 21610.8 times
- Medicare patients
- 142vs 1548% below
- Part D claims
- 83vs 263.2 times
Medians across 679 neurosurgeons in California with Dmand AI profiles that report each measure.
Dr. Cramer'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. Cramer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Cramer and other neurosurgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dennis E. Cramer treated 142 Medicare patients in 2026, average age 68
CMS counts 142 Medicare patients who saw Dr. Cramer in 2026. The largest group is 65 to 74, with 62 patients. 75% of them have arthritis, and 75% have high blood pressure. 59% are also on Medicaid. Their average risk score is 1.46, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Cramer's median patient age at 59, with 61% women.
Medicare patients, 2026142
Average age68
Average risk score1.46
Also on Medicaid59%
Dr. Cramer's Medicare patients by age, 2026
Dr. Cramer's Medicare patients by sex, 2026
- Women8661%
- Men5639%
Chronic conditions among Dr. Cramer's Medicare patients, 2026
- Arthritis75%
- High blood pressure75%
- High cholesterol70%
- Diabetes43%
- Alcohol and drug use disorders29%
- Anxiety27%
- Ischemic heart disease27%
- Depression25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Cramer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dennis E. Cramer wrote 119 Medicare Part D claims in 2026
In 2026, Dr. Cramer wrote 119 Medicare Part D claims for 64 patients. 97% of them were for generic drugs. CMS names the drug for 83 of them, across 4 drugs with 11 or more claims each, at $772 in total drug cost. In 2023, CMS named 64 claims across 3 drugs.
Part D claims, 2026119
Drugs named by CMS4
Total drug cost$772
Part D patients64
Dr. Cramer's Part D claims by kind of drug, 2026
- Generic116 claims97%
- Brand-name and other3 claims3%
Dr. Cramer'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. Cramer's Part D claims, 2026
- Opioids27%32 of 119 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: 642024: 8330%
Drugs named by CMS: 4 in 2024, 3 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. Dennis E. Cramer ranks in the 50th percentile for spinal fusion in Medicare
Dr. Cramer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 39 procedures of spinal fusion by Dr. Cramer, more than 50% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Cramer ranks in Medicare procedure volume
- Spinal fusion
- 50th percentile39 procedures
- Laminectomy or laminotomy (partial removal of spine bones)
- 35th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Dennis E. Cramer has 4 publications on record
Dmand AI links 4 papers to Dr. Cramer.
Papers4
Recent publications by Dr. Cramer
See who Dr. Cramer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Cramer works with, so you can find a warm path to the right neurosurgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Dennis E. Cramer received $116,376 in industry payments from 2016 to 2025
CMS Open Payments shows 91 general payments to Dr. Cramer from 25 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 98% of the total. Xenco Medical LLC paid the most, $107,500.
General payments to Dr. Cramer by program year, 2016 to 2025
General payments to Dr. Cramer by kind, 2016 to 2025
$116.4Kin total
- Consulting fees$114,00098%
- Food and beverage$1,8162%
- Travel and lodging$3600%
- Speaker and faculty fees$2000%
Companies that paid Dr. Cramer 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. Dennis E. Cramer graduated from University Of Cincinnati College Of Medicine
Dr. Cramer graduated from University Of Cincinnati College Of Medicine in 2001.
- Medical school
- Board certified in neurological surgery
Source: Dmand AI Professional Profile Data
Dr. Dennis E. Cramer accepts plans from 14 insurance carriers
Dr. Cramer is in network with 14 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Molina
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Cramer accepts, by number of carriers
- HMO8
- PPO8
- Medicare6
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Dennis E. Cramer'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Dennis E. Cramer
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. Dennis E. Cramer's NPI number?
Dr. Dennis E. Cramer's NPI number is 1336353341. It was assigned on May 9, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Dennis E. Cramer?
Dr. Dennis E. Cramer is a neurosurgeon in Riverside, California. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Dennis E. Cramer practice?
Dr. Cramer practices at 6276 River Crest Dr, Riverside, CA 92507. Dr. Cramer's primary practice is Haider Spine Center Medical Group Inc in Riverside, California. Dmand AI also links Dr. Cramer to 1 hospital, 1 group practice or clinic and 1 medical group, and a free account names each one.
What is Dr. Dennis E. Cramer's email address?
Dmand AI checks professional and personal email addresses for Dr. Cramer through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Dennis E. Cramer's medical license number?
Dr. Cramer holds California license 20A8197, one of the licenses on file in 2 states.
Which states has Dr. Dennis E. Cramer been licensed in?
Dmand AI has state licenses on file for Dr. Cramer in California (2002 to 2026) and Ohio (2006 to 2027).
Which hospitals is Dr. Dennis E. Cramer affiliated with?
Dr. Cramer is affiliated with Riverside Community Hospital. Dmand AI links Dr. Cramer to 1 more hospital, named with a free account.
What medical group is Dr. Dennis E. Cramer part of?
Dr. Cramer is linked to Haider Spine Center. Dmand AI links Dr. Cramer to 1 more medical group, named with a free account.
Who does Dr. Dennis E. Cramer practice with?
Dmand AI links 6 HCPs to Dr. Cramer's primary medical group, 1 of them neurosurgeon. A free account lists them, with verified contacts.
Does Dr. Dennis E. Cramer accept Medicare?
Yes. CMS data shows Dr. Cramer billed Medicare for 2,336 services in 2024, and Dr. Cramer accepts Medicare assignment.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Dennis E. Cramer see?
CMS counts 142 Medicare patients who saw Dr. Cramer in 2026, with an average age of 68.
Is Dr. Dennis E. Cramer board certified?
Yes. Dr. Cramer is board certified in neurological surgery by the AOA Board of Surgery.
What services does Dr. Dennis E. Cramer bill to Medicare?
In 2024, Dr. Cramer's most billed Medicare services were physical therapy and rehabilitation (97110), office visit, established patient (99214) and office visit, new patient (99204).
Where did Dr. Dennis E. Cramer go to medical school?
Dr. Cramer graduated from University Of Cincinnati College Of Medicine in 2001.
What drugs does Dr. Dennis E. Cramer prescribe most?
In 2024 Medicare Part D data, Dr. Cramer's most prescribed drugs by claims were Cyclobenzaprine HCl, Hydrocodone-Acetaminophen and Gabapentin.
Has Dr. Dennis E. Cramer received payments from drug or device companies?
CMS Open Payments shows $116,376 in general payments to Dr. Cramer from 25 companies from 2016 to 2025. The largest total came from Xenco Medical LLC.
How long has Dr. Dennis E. Cramer been practicing?
Dr. Cramer graduated from medical school in 2001, 25 years ago.
Does Dr. Dennis E. Cramer do research?
Dmand AI links 4 publications to Dr. Cramer.
What EHR does Dr. Dennis E. Cramer's practice use?
Dmand AI tracks the EHR system at Haider Spine Center Medical Group Inc and at 3 more sites and 1 medical group. The vendor and product are available with a free Dmand AI account.
What insurance does Dr. Dennis E. Cramer accept?
Dr. Cramer is in network with 14 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit. The full carrier list is available with a free Dmand AI account.
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