Dr. Robert A. Altbaum, MD
- Medicare services, 2021
- 1,314
- Part D claims, 2024
- 64
- Industry payments
- $646
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 34 Maple St, Norwalk, CT 06850
- Practice phone
- Call (203) 852-2216
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Norwalk Hospital
Norwalk, Connecticut
Find Dr. Altbaum'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. Robert A. Altbaum is an internist in Norwalk, Connecticut
Dr. Altbaum practices at Norwalk Hospital in Norwalk, Connecticut.
Dr. Altbaum's NPI, 1285736124, was assigned on September 1, 2006. Dr. Altbaum graduated from Harvard Medical School in 1975. Dr. Altbaum's Connecticut license number on file is 021030.
- NPI
- 1285736124NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870677024
- NPI enumeration date
- September 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 852-2216
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert A. Altbaum practices at Norwalk Hospital in Norwalk, Connecticut
Dr. Altbaum's primary practice is Norwalk Hospital, at 34 Maple St, Norwalk, CT 06850 in Western Ct County. The practice phone is (203) 852-2216.
- Norwalk Hospital34 Maple St, Norwalk, CT 06850 · Western Ct CountyPhone(203) 852-2216
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert A. Altbaum is affiliated with 2 sites of care and 1 medical group
Dr. Altbaum's primary practice is Norwalk Hospital in Norwalk, Connecticut. The medical group on file is Norwalk Community Health Center. Dmand AI also links Dr. Altbaum to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Robert A. Altbaum's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Altbaum practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Norwalk Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert A. Altbaum is one of 2,189 internists in Connecticut
Internal medicine is Dr. Altbaum's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Altbaum is board certified in internal medicine by the American Board of Internal Medicine. Dr. Altbaum has a license on file in Connecticut.
Specialties and state licenses
- Internal medicine, ConnecticutPrimary
Clinical focus
Dmand AI lists chronic diabetes, chronic hypertension, diabetic emergency, fluid and electrolyte imbalances, high cholesterol, upper respiratory infection (URI) and UTI among the conditions Dr. Altbaum treats.
Internists near Dr. Altbaum
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. Robert A. Altbaum billed Medicare for 1,314 services in 2021
CMS data shows 1,314 Medicare services from Dr. Altbaum across 12 procedure codes in 2021. Medicare paid $84,471 for them. Every service was in an office.
Dr. Altbaum's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1,6992021: 94444%
- Tests and treatments
- 2020: 5062021: 24352%
- Other services
- 2020: 3422021: 6282%
- Surgery
- 2020: 842021: 4448%
- Lab and pathology
- 2020: 572021: 2163%
Dr. Altbaum compared with the Connecticut median for internists, 2021
- Dr. Altbaum
- Connecticut median
- Medicare services
- 1,314vs 3903.4 times
- Part D claims
- 339vs 343Close to median
Medians across 2,185 internists in Connecticut with Dmand AI profiles that report each measure.
Dr. Altbaum's most billed Medicare procedure codes, 2021
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. Altbaum?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Altbaum and other internists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert A. Altbaum's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Altbaum's median patient age at 72, with 42% women.
Dr. Altbaum's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women42%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. Robert A. Altbaum wrote 64 Medicare Part D claims in 2024
In 2024, Dr. Altbaum wrote 64 Medicare Part D claims for 16 patients. 92% of them were for generic drugs. They cover 15 drugs, with $6,471 in total drug cost. In 2021, CMS named 6,516 claims across 109 drugs.
Dr. Altbaum's Part D claims by kind of drug, 2024
- Generic59 claims92%
- Brand-name and other5 claims8%
Dr. Altbaum's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 6,5162022: 33995%
Drugs named by CMS: 15 in 2022, 109 in 2021.
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 Dr. Robert A. Altbaum takes part in Medicare
Dr. Altbaum 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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Dr. Robert A. Altbaum received $646 in industry payments from 2016 to 2019
CMS Open Payments shows 41 general payments to Dr. Altbaum from 19 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 98% of the total. Pfizer Inc. paid the most, $76.
General payments to Dr. Altbaum by program year, 2016 to 2019
General payments to Dr. Altbaum by kind, 2016 to 2019
- Food and beverage$63198%
- Education$152%
Companies that paid Dr. Altbaum the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert A. Altbaum has 8 awards and honors on record
Dmand AI lists 8 awards for Dr. Altbaum, most recently Greenwich Magazine in 2014.
Awards and honors for Dr. Altbaum
- 2014
- Greenwich Magazine
- Top Doctors: New York Metro Area
- 2013
- CMS Stage 1 EHR
- 2012
- Checkbook Top Doc
- 2011
- New Canaan-Darien Magazine
- Stamford Magazine
Source: Dmand AI Professional Profile Data
Dr. Robert A. Altbaum graduated from Harvard Medical School
Dr. Altbaum graduated from Harvard Medical School in 1975. Dr. Altbaum is a member of ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Robert A. Altbaum accepts plans from 14 insurance carriers
Dr. Altbaum is in network with 14 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +6 more carriersWith a free account
Plan types Dr. Altbaum accepts, by number of carriers
- PPO9
- HMO7
- Medicare7
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert A. Altbaum'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 Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Robert A. Altbaum
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. Robert A. Altbaum's NPI number?
Dr. Robert A. Altbaum's NPI number is 1285736124. It was assigned on September 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert A. Altbaum?
Dr. Robert A. Altbaum is an internist in Norwalk, Connecticut. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Robert A. Altbaum practice?
Dr. Altbaum practices at 34 Maple St, Norwalk, CT 06850. Dr. Altbaum's primary practice is Norwalk Hospital in Norwalk, Connecticut. Dmand AI also links Dr. Altbaum to 1 group practice or clinic.
What is Dr. Robert A. Altbaum's office phone number?
The practice phone on file for Dr. Altbaum is (203) 852-2216.
What is Dr. Robert A. Altbaum's medical license number?
Dr. Altbaum's Connecticut license number on file is 021030.
What medical group is Dr. Robert A. Altbaum part of?
Dr. Altbaum is linked to Norwalk Community Health Center.
Does Dr. Robert A. Altbaum accept Medicare?
Yes. CMS data shows Dr. Altbaum billed Medicare for 1,314 services in 2021, and Dr. Altbaum accepts Medicare assignment.
Is Dr. Robert A. Altbaum board certified?
Yes. Dr. Altbaum is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Robert A. Altbaum bill to Medicare?
In 2021, Dr. Altbaum's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and heart test or procedure (93000).
Where did Dr. Robert A. Altbaum go to medical school?
Dr. Altbaum graduated from Harvard Medical School in 1975.
Show 4 more questionsShow fewer questions
What drugs does Dr. Robert A. Altbaum prescribe most?
In 2022 Medicare Part D data, Dr. Altbaum's most prescribed drugs by claims were Rosuvastatin Calcium, Atorvastatin Calcium and Amlodipine Besylate.
Has Dr. Robert A. Altbaum received payments from drug or device companies?
CMS Open Payments shows $646 in general payments to Dr. Altbaum from 19 companies from 2016 to 2019. The largest total came from Pfizer Inc.
How long has Dr. Robert A. Altbaum been practicing?
Dr. Altbaum graduated from medical school in 1975, 51 years ago.
What insurance does Dr. Robert A. Altbaum accept?
Dr. Altbaum is in network with 14 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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