Sigrid Katherine Bergenstein , NP
Nurse Practitioner - Primary Care β’ Boston, MA
30 Northampton Street
Boston, MA 021184010
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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Sigrid Bergenstein is listed in NPPES under Nurse Practitioner - Primary Care.
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NPI assigned on January 7, 2011; this date does not establish years in practice.
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Published CMS data list 760 Medicare Part D prescriptions, including refills, in 2022.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2022. Published rows only; this is not a quality measure.
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Published Part D records, 2022:
- Gabapentin β 52 prescription fills, including refills.
- Omeprazole β 51 prescription fills, including refills.
- Escitalopram Oxalate β 35 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2022. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 39 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 1,057 in 2018 to 760 in 2022.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2018β2022.
Practice Location & Contact Primary Location
30 Northampton Street
Boston, MA 021184010
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
Nurse Practitioner - Primary Care: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
941 standardized 30-day fills in 2022
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
$68,178 in 2022
The total cost of these prescriptions in 2022, 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, 2022.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021β2025.
NPI first issued
2011
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Compared with the same specialty in Boston and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Sigrid Bergenstein are from 2022.
63 active clinicians are listed under Nurse Practitioner - Primary Care with a practice address in Boston, MA (385 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Boston
22.2% of these 63 clinicians have the CMS telehealth indicator.
39.7% of these 63 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 decreased 28% from 1,057 in 2018 to 760 in 2022.
- 2018: 1,057
- 2019: 1,006
- 2020: 1,773
- 2021: 2,858
- 2022: 760
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30-day fills
30-day fills decreased 22% from 1,214 in 2018 to 941 in 2022.
- 2018: 1,214
- 2019: 1,188
- 2020: 2,061
- 2021: 3,305
- 2022: 941
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Part D drug cost
Part D drug cost decreased 16% from $81,060 in 2018 to $68,178 in 2022.
- 2018: $81,060
- 2019: $105,194
- 2020: $217,809
- 2021: $208,582
- 2022: $68,178
Sources: CMS Medicare Part D Prescribers (2022), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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 2022.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Gabapentin | Gabapentin | 52 | 2,370 | $955.95 | 16 |
| Omeprazole | Omeprazole | 51 | 1,739 | $978.96 | 12 |
| Escitalopram Oxalate | Escitalopram Oxalate | 35 | 1,097 | $437.98 | β |
| Baclofen | Baclofen | 32 | 1,178 | $1,472.91 | β |
| Atorvastatin Calcium | Atorvastatin Calcium | 31 | 1,314 | $803.25 | 13 |
| Metoprolol Succinate | Metoprolol Succinate | 29 | 1,111 | $391.38 | β |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 27 | 827 | $1,500.91 | β |
| Amlodipine Besylate | Amlodipine Besylate | 26 | 903 | $370.16 | β |
| Losartan Potassium | Losartan Potassium | 26 | 1,348 | $490.18 | β |
| Famotidine | Famotidine | 26 | 730 | $564.28 | β |
| Novolog Flexpen | Insulin Aspart | 22 | 720 | $9,640.47 | β |
| Fluticasone Propionate | Fluticasone Propionate | 19 | 720 | $336.35 | β |
| Ibuprofen | Ibuprofen | 19 | 598 | $276.31 | β |
| Oxycodone Hcl | Oxycodone Hcl | 19 | 419 | $753.37 | 14 |
| Fluoxetine Hcl | Fluoxetine Hcl | 18 | 760 | $253.63 | β |
| Ketoconazole | Ketoconazole | 18 | 540 | $677.53 | β |
| Duloxetine Hcl | Duloxetine Hcl | 18 | 510 | $1,356.76 | β |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 18 | 540 | $2,885.48 | β |
| Diazepam | Diazepam | 17 | 478 | $109.21 | β |
| Metformin Hcl | Metformin Hcl | 17 | 984 | $154.92 | β |
| Tamsulosin Hcl | Tamsulosin Hcl | 17 | 582 | $440.61 | β |
| Hydrochlorothiazide | Hydrochlorothiazide | 15 | 684 | $146.53 | β |
| Myrbetriq | Mirabegron | 15 | 426 | $6,140.28 | β |
| Eliquis | Apixaban | 14 | 414 | $7,183.08 | β |
| Incruse Ellipta | Umeclidinium Bromide | 14 | 420 | $5,074.56 | β |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363LP2300X
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 - Family
Nurse Practitioner
Family Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Social Worker - Clinical
Licensed Independent Clinical Social Worker
Nurse Practitioner - Adult Health
Nurse Practitioner
Nurse Practitioner - Family
Nurse Practitioner
Career & Practice History
NPI enumerated January 07, 2011.
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 November 2026.
NPI Administrative Meta
Other Nurse Practitioner - Primary Care Specialists in Boston
- Charlotte Robertshaw, NP
- Julian Dormitzer, NP
- Mila Huffman, NP-C
- Malgorzata Smas
- Jessica Lacroix
- Michaela Gee, RN
Mailing Address
30 Northampton Street
Boston, MA 021184010
Phone: 6174339601