Quick answers
- Does Theodore A. Guldemond accept Medicare assignment?
- Yes. Medicare's clinician data says Theodore A. Guldemond accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Theodore A. Guldemond see?
- In 2024, CMS data shows 182 Original Medicare patients and 391 services for Theodore A. Guldemond. This counts Original Medicare only and measures volume, not quality.
- What is Theodore A. Guldemond's NPI number?
- 1598721524. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Theodore A. Guldemond, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 182 |
|---|---|
| Services billed to Medicare | 391 |
| Different services or procedures | 42 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)92 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)61 services
- Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) (87811)35 services
- Automated urinalysis test (81003)28 services
- Detection test by immunoassay with direct visual observation for influenza virus (87804)24 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol70%
- High blood pressure61%
- Arthritis45%
- Anxiety30%
- Depression26%
- Ischemic heart disease22%
Practice locations
Addresses where Theodore A. Guldemond is enrolled with Medicare (CMS data updated October 2, 2026).
- 450 Paradise RdSwampscott, MA 01907 (781) 691‑9366
- 50 Dodge St, Suite 104Beverly, MA 01915 (978) 922‑2171
Group practices
Medicare enrollment lists Theodore A. Guldemond as a member of this group (CMS data updated October 2, 2026).
- Urgent Care Operations PC41 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Other clinicians in Urgent Care Operations PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Des Moines University Of Osteopathic Medicine And Health Sciences |
| Graduation year | 1980 (46 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598721524 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians