Mark Alan Barlow , PA-C
Physician Assistant β’ Boston, MA
243 Charles St
Boston, MA 021143096
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 July 26, 2021; this date does not establish years in practice.
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Published CMS data list 820 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Azelastine Hcl β 201 prescription fills, including refills.
- Ipratropium Bromide β 173 prescription fills, including refills.
- Fluticasone Propionate β 157 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 12 records in the table Β· Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 90% of clinicians listed under Physician Assistant in Boston, MA (2024, 574 clinicians with data). Median for this group: 92. Middle half: 27 to 292.
More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Massachusetts (2024, 2,255 clinicians with data). Median for this group: 175. Middle half: 52 to 564.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 37 in 2023 to 820 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023β2024.
Practice Location & Contact Primary Location
243 Charles St
Boston, MA 021143096
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Massachusetts Eye And Ear Associates, Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2022
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
1,426 standardized 30-day fills in 2024
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
$169,488 in 2024
The total cost of these prescriptions in 2024, 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 β by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021β2025.
Years since graduation
4 years (graduated 2022)
CMS Doctors and Clinicians data list 2022 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2021
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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, βDoes your provider accept Medicare as full payment?β
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.
Enrolled in Medicare (PECOS)
Mark Barlow has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Mark Barlow as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Boston and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Physician Assistant in Boston, MA (2024, 574 clinicians with data). Median for this group: 92. Middle half: 27 to 292.
More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Massachusetts (2024, 2,255 clinicians with data). Median for this group: 175. Middle half: 52 to 564.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under Physician Assistant in Boston, MA (2024, 574 clinicians with data). Median for this group: $1,258. Middle half: $294 to $26,549.
A higher Part D drug cost than 85% of clinicians listed under Physician Assistant in Massachusetts (2024, 2,255 clinicians with data). Median for this group: $2,484. Middle half: $458 to $50,541.
1,660 active clinicians are listed under Physician Assistant with a practice address in Boston, MA (4,715 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Boston
15.4% of these 1,660 clinicians have the CMS telehealth indicator.
57.1% of these 1,660 clinicians are listed by CMS as accepting Medicare assignment.
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 increased 2116% from 37 in 2023 to 820 in 2024.
- 2023: 37
- 2024: 820
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30-day fills
30-day fills increased 1840% from 74 in 2023 to 1,426 in 2024.
- 2023: 74
- 2024: 1,426
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Part D drug cost
Part D drug cost increased 14227% from $1,183 in 2023 to $169,488 in 2024.
- 2023: $1,183
- 2024: $169,488
Sources: CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Azelastine Hcl | Azelastine Hcl | 201 | 7,488 | $5,304.48 | 66 |
| Ipratropium Bromide | Ipratropium Bromide | 173 | 8,389 | $7,187.83 | 65 |
| Fluticasone Propionate | Fluticasone Propionate | 157 | 9,615 | $2,716.43 | 66 |
| Budesonide | Budesonide | 86 | 5,136 | $12,263.64 | 31 |
| Omeprazole | Omeprazole | 65 | 3,984 | $1,084.72 | 25 |
| Mupirocin | Mupirocin | 31 | 502 | $340.15 | 24 |
| Famotidine | Famotidine | 26 | 2,080 | $506.87 | 16 |
| Dupixent Pen | Dupilumab | 20 | 560 | $76,593.97 | β |
| Dupixent Syringe | Dupilumab | 17 | 476 | $62,796.87 | β |
| Montelukast Sodium | Montelukast Sodium | 16 | 1,058 | $268.71 | β |
| Pantoprazole Sodium | Pantoprazole Sodium | 16 | 1,260 | $283.01 | β |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 12 | 118 | $140.93 | 11 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2023-06-23NUCC 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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20230711002554
MA
6103285945
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Massachusetts Eye And Ear Associates, Inc
243 Charles St, Boston, MA 021143002
Phone: 6175237900
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 243 CHARLES ST, BOSTON, MA 021143096 (Tel: 6175733209)
Registered at 243 CHARLES ST, BOSTON, MA 021143096 (Tel: 6175733209)
Recorded as MARK BARLOW, PA-C
Physician Assistant (license number reported to NPPES: MA PA9375)
NPI status registered as active in NPPES database
Registered at 4213 BAY FRONT RD, MOBILE, AL 366059412 (Tel: 2518955514)
Registered at 4213 BAY FRONT RD, MOBILE, AL 366059412 (Tel: 2518955514)
Recorded as MARK BARLOW
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Boston
- Vition Mbrica, PA
- Emily Wacks, PA-C
- Divya Sahore, PA-C
- Emma Moar
- Matthew Grabowski, PA
- Kelly Danek, PA-C
Mailing Address
243 Charles St
Boston, MA 021143096
Phone: 6175733209