David L. Probert , PA
Physician Assistant • Gloucester, MA
1 Blackburn Dr
Gloucester, MA 019302237
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on February 17, 2006; this date does not establish years in practice.
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Published CMS data list 696 Medicare Part D prescriptions, including refills, in 2017.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2017. Published rows only; this is not a quality measure.
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Published Part D records, 2017:
- Metoprolol Succinate — 69 prescription fills, including refills.
- Atorvastatin Calcium — 66 prescription fills, including refills.
- Ramipril — 54 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2017. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 23 records in the table · Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 4,959 in 2013 to 696 in 2017.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2013–2017.
Practice Location & Contact Primary Location
1 Blackburn Dr
Gloucester, MA 019302237
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
1,131 standardized 30-day fills in 2017
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$48,341 in 2017
The total cost of these prescriptions in 2017, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2017.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Gloucester and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for David Probert are from 2017.
3 active clinicians are listed under Physician Assistant with a practice address in Gloucester, MA (4,715 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 86% from 4,959 in 2013 to 696 in 2017.
- 2013: 4,959
- 2014: 4,824
- 2015: 4,718
- 2016: 4,507
- 2017: 696
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30-day fills
30-day fills decreased 84% from 7,024 in 2013 to 1,131 in 2017.
- 2013: 7,024
- 2014: 7,220
- 2015: 7,051
- 2016: 7,128
- 2017: 1,131
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Part D drug cost
Part D drug cost decreased 76% from $198,718 in 2013 to $48,341 in 2017.
- 2013: $198,718
- 2014: $247,279
- 2015: $258,763
- 2016: $335,763
- 2017: $48,341
Sources: CMS Medicare Part D Prescribers (2017), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2017.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Metoprolol Succinate | Metoprolol Succinate | 69 | 3,022 | $1,292.07 | 27 |
| Atorvastatin Calcium | Atorvastatin Calcium | 66 | 4,156 | $938.31 | 32 |
| Ramipril | Ramipril | 54 | 2,816 | $335.13 | 21 |
| Furosemide | Furosemide | 43 | 1,650 | $121.24 | 15 |
| Xarelto | Rivaroxaban | 42 | 1,572 | $20,160.41 | — |
| Lisinopril | Lisinopril | 38 | 2,160 | $185.96 | 17 |
| Warfarin Sodium | Warfarin Sodium | 35 | 1,447 | $633.12 | 15 |
| Clopidogrel | Clopidogrel Bisulfate | 35 | 1,578 | $406.37 | 14 |
| Amlodipine Besylate | Amlodipine Besylate | 33 | 1,890 | $147.75 | 12 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 31 | 1,350 | $431.36 | — |
| Metoprolol Tartrate | Metoprolol Tartrate | 29 | 1,530 | $156.46 | 13 |
| Diltiazem 24hr Er | Diltiazem Hcl | 29 | 990 | $521.99 | — |
| Losartan Potassium | Losartan Potassium | 28 | 1,860 | $208.89 | 12 |
| Simvastatin | Simvastatin | 27 | 1,410 | $127.30 | 13 |
| Chlorthalidone | Chlorthalidone | 22 | 1,140 | $831.92 | — |
| Carvedilol | Carvedilol | 21 | 990 | $97.72 | — |
| Ranexa | Ranolazine | 18 | 540 | $9,981.58 | — |
| Atenolol | Atenolol | 16 | 1,200 | $151.09 | — |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 13 | 570 | $410.14 | — |
| Digox | Digoxin | 12 | 420 | $661.07 | — |
| Entresto | Sacubitril/Valsartan | 12 | 480 | $6,468.01 | — |
| Ezetimibe | Ezetimibe | 12 | 540 | $3,932.37 | — |
| Sotalol | Sotalol Hcl | 11 | 510 | $140.36 | — |
Source: CMS Part D by Provider and Drug, 2017; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Adult Health
Nurse Practitioner
Nurse Practitioner - Family
Family Nurse Practitioner (Board Certified)
Career & Practice History
NPI enumerated February 17, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Gloucester
Healthcare providers in GloucesterMailing Address
8 Camp St
Milford, MA 017571065
Phone: 5084778373