Mark A. Bookspan

  • Santa Barbara, CA
  • Internist
NPI1104908292PAC ID7810988904
Medicare services, 2024
1,206
Medicare patients, 2024
207
Part D claims, 2024
176
Publications
2
Hospital affiliations
1
Practice address
400 West Pueblo, Santa Barbara, CA 93105
Practice phone
Call (805) 682-7111
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Santa Barbara Cottage Hospital

Hospital · Santa Barbara, California

See all 3 affiliations

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Mark A. Bookspan is an internist in Santa Barbara, California

Mark Bookspan practices at Santa Barbara Cottage Hospital in Santa Barbara, California, part of Cottage Health.

Mark Bookspan's NPI, 1104908292, was assigned on October 19, 2006. Mark Bookspan graduated from University of Toledo College of Medicine and Life Sciences in 1972. Mark Bookspan holds California license G36429.

NPI and contact details
Medicare PAC ID
7810988904
NPI enumeration date
October 19, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(805) 682-7111
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
80
Medical school graduation
1972

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Mark A. Bookspan practices at Santa Barbara Cottage Hospital in Santa Barbara, California

Mark Bookspan's primary practice is Santa Barbara Cottage Hospital, at 400 West Pueblo, Santa Barbara, CA 93105 in Santa Barbara County. The practice phone is (805) 682-7111.

Source: Dmand AI Affiliation Data

Mark A. Bookspan is affiliated with 1 site of care and 2 medical groups

Mark Bookspan's primary practice is Santa Barbara Cottage Hospital in Santa Barbara, California, part of Cottage Health. The medical group on file is Physicians' Medical Group. Dmand AI also links Mark Bookspan to 1 more medical group, named with a free account.

See all 3 affiliations for Mark Bookspan

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Mark A. Bookspan's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Mark Bookspan practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Santa Barbara Cottage HospitalAvailable with a free account
+1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Mark A. Bookspan is one of 16,751 internists in California

Internal medicine is Mark Bookspan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Mark Bookspan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Mark Bookspan's licenses on file in 2 states: California and Pennsylvania.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense G36429 · 1978 to 2026 · taxonomy 207R00000X
  • Pennsylvania license1975 to 1978

Clinical focus

Dmand AI lists acute respiratory failure, bone infection, cardiac arrhythmia, cellulitis, circulation problems, circulatory problems in extremities, cirrhosis and congestive heart failure among the conditions Mark Bookspan treats.

Internists near Mark Bookspan

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

Mark A. Bookspan billed Medicare for 1,206 services in 2024

CMS data shows 1,206 Medicare services from Mark Bookspan across 3 procedure codes in 2024, for 207 Medicare patients. Medicare paid $86,229 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,206
Medicare patients207
Paid by Medicare$86,229
Procedure codes3

Mark Bookspan's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1,2672024: 1,2065%

Mark Bookspan compared with the California median for internists, 2024

  • Mark Bookspan
  • California median
Medicare services
1,206vs 3613.3 times
Medicare patients
207vs 15137% above
Part D claims
85vs 42180% below

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Mark Bookspan'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.

See all procedures by Mark Bookspan

Need commercial claims for Mark Bookspan?

Medicare shows one payer. Book a meeting to get commercial claims data for Mark Bookspan and other internists in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Mark A. Bookspan treated 207 Medicare patients in 2024, average age 72

CMS counts 207 Medicare patients who saw Mark Bookspan in 2024. The largest group is 65 to 74, with 80 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 81% are also on Medicaid. Their average risk score is 2.92, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Mark Bookspan's median patient age at 78, with 67% women.

Medicare patients, 2024207
Average age72
Average risk score2.92
Also on Medicaid81%

Mark Bookspan's Medicare patients by age, 2024

Mark Bookspan's Medicare patients by sex, 2024

  • Women10450%
  • Men10350%

Chronic conditions among Mark Bookspan's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol68%
  3. Arthritis56%
  4. Diabetes48%
  5. Chronic kidney disease47%
  6. Heart failure45%
  7. Ischemic heart disease43%
  8. Mood disorders40%

Share of Medicare patients with each condition. A patient can have several.

Mark Bookspan's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 78

Patient panel by sex, all payers

  • Women67%
  • Men33%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Mark A. Bookspan wrote 176 Medicare Part D claims in 2024

In 2024, Mark Bookspan wrote 176 Medicare Part D claims for 19 patients. 33% of them were for generic drugs. CMS names the drug for 85 of them, across 5 drugs with 11 or more claims each, at $453,125 in total drug cost. In 2023, CMS named 133 claims across 8 drugs.

Part D claims, 2024176
Drugs named by CMS5
Total drug cost$453,125
Part D patients19

Mark Bookspan's Part D claims by kind of drug, 2024

  • Generic58 claims33%
  • Brand-name118 claims67%

Mark Bookspan'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.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1332024: 8536%

Drugs named by CMS: 5 in 2024, 8 in 2023.

See all prescribing by Mark Bookspan

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

How Mark A. Bookspan takes part in Medicare

Mark Bookspan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Mark A. Bookspan has 2 publications on record

Dmand AI links 2 papers to Mark Bookspan. Mark Bookspan's most frequent co-authors are Stuart Paul Brogadir, MD and Esther M. Sewell, MD.

Papers2

Mark Bookspan's most frequent co-authors

Recent publications by Mark Bookspan

See all 2 publications and co-authors

See who Mark Bookspan researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Mark Bookspan works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Mark A. Bookspan received $1,810 in industry payments from 2016 to 2023

CMS Open Payments shows 22 general payments to Mark Bookspan from 11 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $334.

General payments to Mark Bookspan by program year, 2016 to 2023

Companies that paid Mark Bookspan the most, 2016 to 2023

Share is of all general payments to this clinician.

See all payments to Mark Bookspan

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Mark A. Bookspan graduated from University of Toledo College of Medicine and Life Sciences

Mark Bookspan graduated from University of Toledo College of Medicine and Life Sciences in 1972.

  1. Medical schoolUniversity of Toledo College of Medicine and Life Sciences
  2. Board certified in internal medicineAmerican Board of Internal Medicine
  3. Board certified in rheumatologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Mark A. Bookspan accepts plans from 1 insurance carrier

Mark Bookspan is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • CMS Medicare

Source: Dmand AI Insurance Network Data

Sources for Mark A. Bookspan's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Mark A. Bookspan

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Mark A. Bookspan's NPI number?

Mark A. Bookspan's NPI number is 1104908292. It was assigned on October 19, 2006, and it is active in the NPI Registry.

What does Mark A. Bookspan specialize in?

Mark A. Bookspan is an internist in Santa Barbara, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Mark A. Bookspan practice?

Mark Bookspan practices at 400 West Pueblo, Santa Barbara, CA 93105. Mark Bookspan's primary practice is Santa Barbara Cottage Hospital in Santa Barbara, California, part of Cottage Health. Dmand AI also links Mark Bookspan to 1 medical group.

What is Mark A. Bookspan's office phone number?

The practice phone on file for Mark Bookspan is (805) 682-7111.

What is Mark A. Bookspan's medical license number?

Mark Bookspan holds California license G36429, one of the licenses on file in 2 states.

Which states has Mark A. Bookspan been licensed in?

Dmand AI has state licenses on file for Mark Bookspan in California (1978 to 2026) and Pennsylvania (1975 to 1978).

Which hospitals is Mark A. Bookspan affiliated with?

Mark Bookspan practices at Santa Barbara Cottage Hospital in Santa Barbara, California.

What medical group is Mark A. Bookspan part of?

Mark Bookspan is linked to Physicians' Medical Group. Dmand AI links Mark Bookspan to 1 more medical group.

Does Mark A. Bookspan accept Medicare?

Yes. CMS data shows Mark Bookspan billed Medicare for 1,206 services in 2024, and Mark Bookspan accepts Medicare assignment.

How many Medicare patients does Mark A. Bookspan see?

CMS counts 207 Medicare patients who saw Mark Bookspan in 2024, with an average age of 72.

Show 9 more questionsShow fewer questions

Is Mark A. Bookspan board certified?

Yes. Mark Bookspan is board certified in internal medicine by the American Board of Internal Medicine.

What services does Mark A. Bookspan bill to Medicare?

In 2024, Mark Bookspan's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and hospital inpatient care (99238).

Where did Mark A. Bookspan go to medical school?

Mark Bookspan graduated from University of Toledo College of Medicine and Life Sciences in 1972.

What drugs does Mark A. Bookspan prescribe most?

In 2024 Medicare Part D data, Mark Bookspan's most prescribed drugs by claims were Benlysta, Humira Pen and Xeljanz.

Has Mark A. Bookspan received payments from drug or device companies?

CMS Open Payments shows $1,810 in general payments to Mark Bookspan from 11 companies from 2016 to 2023. The largest total came from Abbvie Inc.

How long has Mark A. Bookspan been practicing?

Mark Bookspan graduated from medical school in 1972, 54 years ago.

Does Mark A. Bookspan do research?

Dmand AI links 2 publications to Mark Bookspan.

Who does Mark A. Bookspan publish with?

Mark Bookspan's most frequent co-authors are Stuart Paul Brogadir, MD (1 shared paper) and Esther M. Sewell, MD (1 shared paper).

What insurance does Mark A. Bookspan accept?

Mark Bookspan is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.

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