Dr. Rebecca K. Nessel, MD
- Medicare services, 2024
- 163
- Medicare patients, 2024
- 66
- Part D claims, 2024
- 60
- MIPS score, 2024
- 100
- Hospital affiliations
- 1
- Practice address
- 505 Parnassus Ave, Box 0296, San Francisco, CA 94143
- Practice phone
- Call (415) 353-2733
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Nessel's professional email, personal email and mobile number
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Dr. Rebecca K. Nessel is a hospitalist in San Francisco, California
Dr. Nessel practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.
Dr. Nessel's NPI, 1861439085, was assigned on May 31, 2006. Dr. Nessel graduated from Northwestern University Feinberg Medical School in 2003. Dr. Nessel holds California license A90329.
- NPI
- 1861439085NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618971870
- NPI enumeration date
- May 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 353-2733
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rebecca K. Nessel practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California
Dr. Nessel's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.
- UCSF Helen Diller Medical Center at Parnassus Heights505 Parnassus Ave, Box 0296, San Francisco, CA 94143 · San Francisco CountyPhone(415) 353-2733
Source: Dmand AI Affiliation Data
Dr. Rebecca K. Nessel is affiliated with 4 sites of care and 3 medical groups
Dr. Nessel's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Nessel to 3 more group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Rebecca K. Nessel's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nessel practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Helen Diller Medical Center at Parnassus Heights | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rebecca K. Nessel is one of 3,186 hospitalists in California
Hospitalist is Dr. Nessel's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Nessel is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Nessel
Counts of hospitalists 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. Rebecca K. Nessel billed Medicare for 163 services in 2024
CMS data shows 163 Medicare services from Dr. Nessel across 3 procedure codes in 2024, for 66 Medicare patients. Medicare paid $15,194 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nessel's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1382024: 16318%
Dr. Nessel compared with the California median for hospitalists, 2024
- Dr. Nessel
- California median
- Medicare services
- 163vs 43062% below
- Medicare patients
- 66vs 20167% below
- Part D claims
- 12vs 6983% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Nessel'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Rebecca K. Nessel treated 66 Medicare patients in 2024, average age 75
CMS counts 66 Medicare patients who saw Dr. Nessel in 2024. The largest group is 65 to 74, with 31 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 59% are also on Medicaid. Their average risk score is 3.22, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Nessel's median patient age at 69, with 49% women.
Dr. Nessel's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nessel's Medicare patients by sex, 2024
- Women2842%
- Men3858%
Chronic conditions among Dr. Nessel's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes59%
- Chronic kidney disease58%
- Ischemic heart disease56%
- Mood disorders53%
- Depression50%
- Anxiety45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nessel's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women49%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Rebecca K. Nessel wrote 60 Medicare Part D claims in 2024
In 2024, Dr. Nessel wrote 60 Medicare Part D claims for 24 patients. 78% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $315 in total drug cost.
Dr. Nessel's Part D claims by kind of drug, 2024
- Generic47 claims78%
- Brand-name and other13 claims22%
Dr. Nessel's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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. Rebecca K. Nessel scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Nessel for performance year 2024, reported as part of a group. Dr. Nessel accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Nessel's MIPS scores, performance year 2024
- 100of 100Final score
- 95of 100Quality
- 40of 100Improvement Activities
- 81of 100Cost
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. Rebecca K. Nessel graduated from Northwestern University Feinberg Medical School
Dr. Nessel graduated from Northwestern University Feinberg Medical School in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Rebecca K. Nessel'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 DataDmand AI Org Hierarchy 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) |
| 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. Rebecca K. Nessel
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. Rebecca K. Nessel's NPI number?
Dr. Rebecca K. Nessel's NPI number is 1861439085. It was assigned on May 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Rebecca K. Nessel?
Dr. Rebecca K. Nessel is a hospitalist in San Francisco, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Rebecca K. Nessel practice?
Dr. Nessel practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. Nessel's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dmand AI also links Dr. Nessel to 3 group practices and clinics and 2 medical groups.
What is Dr. Rebecca K. Nessel's office phone number?
The practice phone on file for Dr. Nessel is (415) 353-2733.
What is Dr. Rebecca K. Nessel's medical license number?
Dr. Nessel holds California license A90329.
Which hospitals is Dr. Rebecca K. Nessel affiliated with?
Dr. Nessel practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California.
What medical group is Dr. Rebecca K. Nessel part of?
Dr. Nessel is linked to UCSF Pediatrics. Dmand AI links Dr. Nessel to 2 more medical groups.
Does Dr. Rebecca K. Nessel accept Medicare?
Yes. CMS data shows Dr. Nessel billed Medicare for 163 services in 2024, and Dr. Nessel accepts Medicare assignment.
What is Dr. Rebecca K. Nessel's MIPS score?
Dr. Nessel's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Rebecca K. Nessel see?
CMS counts 66 Medicare patients who saw Dr. Nessel in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Rebecca K. Nessel bill to Medicare?
In 2024, Dr. Nessel's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
Where did Dr. Rebecca K. Nessel go to medical school?
Dr. Nessel graduated from Northwestern University Feinberg Medical School in 2003.
What drugs does Dr. Rebecca K. Nessel prescribe most?
In 2016 Medicare Part D data, Dr. Nessel's most prescribed drugs by claims were Ranitidine HCl.
How long has Dr. Rebecca K. Nessel been practicing?
Dr. Nessel graduated from medical school in 2003, 23 years ago.
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